About the Number

381728880

381728879 ← → 381728881

2進数表記:10110110000001011100001110000

漢数字表記:三億八千百七十二万八千八百八十

素因数分解:

2 4 × 3 2 × 5 1 × 13 1 × 17 1 × 2399 1

素因数の和:2448
約数の個数: 240
約数和(自身を含む): 1462406400
約数和(自身を除く): 1080677520

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 18, 20, 24, 26, 30, 34, 36, 39, 40, 45, 48, 51, 52, 60, 65, 68, 72, 78, 80, 85, 90, 102, 104, 117, 120, 130, 136, 144, 153, 156, 170, 180, 195, 204, 208, 221, 234, 240, 255, 260, 272, 306, 312, 340, 360, 390, 408, 442, 468, 510, 520, 585, 612, 624, 663, 680, 720, 765, 780, 816, 884, 936, 1020, 1040, 1105, 1170, 1224, 1326, 1360, 1530, 1560, 1768, 1872, 1989, 2040, 2210, 2340, 2399, 2448, 2652, 3060, 3120, 3315, 3536, 3978, 4080, 4420, 4680, 4798, 5304, 6120, 6630, 7197, 7956, 8840, 9360, 9596, 9945, 10608, 11995, 12240, 13260, 14394, 15912, 17680, 19192, 19890, 21591, 23990, 26520, 28788, 31187, 31824, 35985, 38384, 39780, 40783, 43182, 47980, 53040, 57576, 62374, 71970, 79560, 81566, 86364, 93561, 95960, 107955, 115152, 122349, 124748, 143940, 155935, 159120, 163132, 172728, 187122, 191920, 203915, 215910, 244698, 249496, 280683, 287880, 311870, 326264, 345456, 367047, 374244, 407830, 431820, 467805, 489396, 498992, 530179, 561366, 575760, 611745, 623740, 652528, 734094, 748488, 815660, 863640, 935610, 978792, 1060358, 1122732, 1223490, 1247480, 1403415, 1468188, 1496976, 1590537, 1631320, 1727280, 1835235, 1871220, 1957584, 2120716, 2245464, 2446980, 2494960, 2650895, 2806830, 2936376, 3181074, 3262640, 3670470, 3742440, 4241432, 4490928, 4771611, 4893960, 5301790, 5613660, 5872752, 6362148, 7340940, 7484880, 7952685, 8482864, 9543222, 9787920, 10603580, 11227320, 12724296, 14681880, 15905370, 19086444, 21207160, 22454640, 23858055, 25448592, 29363760, 31810740, 38172888, 42414320, 47716110, 63621480, 76345776, 95432220, 127242960, 190864440, 381728880]

約数ペア:
[(1, 381728880), (2, 190864440), (3, 127242960), (4, 95432220), (5, 76345776), (6, 63621480), (8, 47716110), (9, 42414320), (10, 38172888), (12, 31810740), (13, 29363760), (15, 25448592), (16, 23858055), (17, 22454640), (18, 21207160), (20, 19086444), (24, 15905370), (26, 14681880), (30, 12724296), (34, 11227320), (36, 10603580), (39, 9787920), (40, 9543222), (45, 8482864), (48, 7952685), (51, 7484880), (52, 7340940), (60, 6362148), (65, 5872752), (68, 5613660), (72, 5301790), (78, 4893960), (80, 4771611), (85, 4490928), (90, 4241432), (102, 3742440), (104, 3670470), (117, 3262640), (120, 3181074), (130, 2936376), (136, 2806830), (144, 2650895), (153, 2494960), (156, 2446980), (170, 2245464), (180, 2120716), (195, 1957584), (204, 1871220), (208, 1835235), (221, 1727280), (234, 1631320), (240, 1590537), (255, 1496976), (260, 1468188), (272, 1403415), (306, 1247480), (312, 1223490), (340, 1122732), (360, 1060358), (390, 978792), (408, 935610), (442, 863640), (468, 815660), (510, 748488), (520, 734094), (585, 652528), (612, 623740), (624, 611745), (663, 575760), (680, 561366), (720, 530179), (765, 498992), (780, 489396), (816, 467805), (884, 431820), (936, 407830), (1020, 374244), (1040, 367047), (1105, 345456), (1170, 326264), (1224, 311870), (1326, 287880), (1360, 280683), (1530, 249496), (1560, 244698), (1768, 215910), (1872, 203915), (1989, 191920), (2040, 187122), (2210, 172728), (2340, 163132), (2399, 159120), (2448, 155935), (2652, 143940), (3060, 124748), (3120, 122349), (3315, 115152), (3536, 107955), (3978, 95960), (4080, 93561), (4420, 86364), (4680, 81566), (4798, 79560), (5304, 71970), (6120, 62374), (6630, 57576), (7197, 53040), (7956, 47980), (8840, 43182), (9360, 40783), (9596, 39780), (9945, 38384), (10608, 35985), (11995, 31824), (12240, 31187), (13260, 28788), (14394, 26520), (15912, 23990), (17680, 21591), (19192, 19890)]

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