251921520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:244

約数の個数: 240

約数和(自身を含む): 885181440

約数和(自身を除く): 633259920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 43, 45, 48, 60, 72, 79, 80, 86, 90, 103, 120, 129, 144, 158, 172, 180, 206, 215, 237, 240, 258, 309, 316, 344, 360, 387, 395, 412, 430, 474, 515, 516, 618, 632, 645, 688, 711, 720, 774, 790, 824, 860, 927, 948, 1030, 1032, 1185, 1236, 1264, 1290, 1422, 1545, 1548, 1580, 1648, 1720, 1854, 1896, 1935, 2060, 2064, 2370, 2472, 2580, 2844, 3090, 3096, 3160, 3397, 3440, 3555, 3708, 3792, 3870, 4120, 4429, 4635, 4740, 4944, 5160, 5688, 6180, 6192, 6320, 6794, 7110, 7416, 7740, 8137, 8240, 8858, 9270, 9480, 10191, 10320, 11376, 12360, 13287, 13588, 14220, 14832, 15480, 16274, 16985, 17716, 18540, 18960, 20382, 22145, 24411, 24720, 26574, 27176, 28440, 30573, 30960, 32548, 33970, 35432, 37080, 39861, 40685, 40764, 44290, 48822, 50955, 53148, 54352, 56880, 61146, 65096, 66435, 67940, 70864, 73233, 74160, 79722, 81370, 81528, 88580, 97644, 101910, 106296, 122055, 122292, 130192, 132870, 135880, 146466, 152865, 159444, 162740, 163056, 177160, 195288, 199305, 203820, 212592, 244110, 244584, 265740, 271760, 292932, 305730, 318888, 325480, 349891, 354320, 366165, 390576, 398610, 407640, 488220, 489168, 531480, 585864, 611460, 637776, 650960, 699782, 732330, 797220, 815280, 976440, 1049673, 1062960, 1171728, 1222920, 1399564, 1464660, 1594440, 1749455, 1952880, 2099346, 2445840, 2799128, 2929320, 3149019, 3188880, 3498910, 4198692, 5248365, 5598256, 5858640, 6298038, 6997820, 8397384, 10496730, 12596076, 13995640, 15745095, 16794768, 20993460, 25192152, 27991280, 31490190, 41986920, 50384304, 62980380, 83973840, 125960760, 251921520]

約数ペア:

[(1, 251921520), (2, 125960760), (3, 83973840), (4, 62980380), (5, 50384304), (6, 41986920), (8, 31490190), (9, 27991280), (10, 25192152), (12, 20993460), (15, 16794768), (16, 15745095), (18, 13995640), (20, 12596076), (24, 10496730), (30, 8397384), (36, 6997820), (40, 6298038), (43, 5858640), (45, 5598256), (48, 5248365), (60, 4198692), (72, 3498910), (79, 3188880), (80, 3149019), (86, 2929320), (90, 2799128), (103, 2445840), (120, 2099346), (129, 1952880), (144, 1749455), (158, 1594440), (172, 1464660), (180, 1399564), (206, 1222920), (215, 1171728), (237, 1062960), (240, 1049673), (258, 976440), (309, 815280), (316, 797220), (344, 732330), (360, 699782), (387, 650960), (395, 637776), (412, 611460), (430, 585864), (474, 531480), (515, 489168), (516, 488220), (618, 407640), (632, 398610), (645, 390576), (688, 366165), (711, 354320), (720, 349891), (774, 325480), (790, 318888), (824, 305730), (860, 292932), (927, 271760), (948, 265740), (1030, 244584), (1032, 244110), (1185, 212592), (1236, 203820), (1264, 199305), (1290, 195288), (1422, 177160), (1545, 163056), (1548, 162740), (1580, 159444), (1648, 152865), (1720, 146466), (1854, 135880), (1896, 132870), (1935, 130192), (2060, 122292), (2064, 122055), (2370, 106296), (2472, 101910), (2580, 97644), (2844, 88580), (3090, 81528), (3096, 81370), (3160, 79722), (3397, 74160), (3440, 73233), (3555, 70864), (3708, 67940), (3792, 66435), (3870, 65096), (4120, 61146), (4429, 56880), (4635, 54352), (4740, 53148), (4944, 50955), (5160, 48822), (5688, 44290), (6180, 40764), (6192, 40685), (6320, 39861), (6794, 37080), (7110, 35432), (7416, 33970), (7740, 32548), (8137, 30960), (8240, 30573), (8858, 28440), (9270, 27176), (9480, 26574), (10191, 24720), (10320, 24411), (11376, 22145), (12360, 20382), (13287, 18960), (13588, 18540), (14220, 17716), (14832, 16985), (15480, 16274)]