287888880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1795

約数の個数: 160

約数和(自身を含む): 968563008

約数和(自身を除く): 680674128

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 41, 48, 51, 60, 68, 80, 82, 85, 102, 120, 123, 136, 164, 170, 204, 205, 240, 246, 255, 272, 328, 340, 408, 410, 492, 510, 615, 656, 680, 697, 816, 820, 984, 1020, 1230, 1360, 1394, 1640, 1721, 1968, 2040, 2091, 2460, 2788, 3280, 3442, 3485, 4080, 4182, 4920, 5163, 5576, 6884, 6970, 8364, 8605, 9840, 10326, 10455, 11152, 13768, 13940, 16728, 17210, 20652, 20910, 25815, 27536, 27880, 29257, 33456, 34420, 41304, 41820, 51630, 55760, 58514, 68840, 70561, 82608, 83640, 87771, 103260, 117028, 137680, 141122, 146285, 167280, 175542, 206520, 211683, 234056, 282244, 292570, 351084, 352805, 413040, 423366, 438855, 468112, 564488, 585140, 702168, 705610, 846732, 877710, 1058415, 1128976, 1170280, 1199537, 1404336, 1411220, 1693464, 1755420, 2116830, 2340560, 2399074, 2822440, 3386928, 3510840, 3598611, 4233660, 4798148, 5644880, 5997685, 7021680, 7197222, 8467320, 9596296, 11995370, 14394444, 16934640, 17993055, 19192592, 23990740, 28788888, 35986110, 47981480, 57577776, 71972220, 95962960, 143944440, 287888880]

約数ペア:

[(1, 287888880), (2, 143944440), (3, 95962960), (4, 71972220), (5, 57577776), (6, 47981480), (8, 35986110), (10, 28788888), (12, 23990740), (15, 19192592), (16, 17993055), (17, 16934640), (20, 14394444), (24, 11995370), (30, 9596296), (34, 8467320), (40, 7197222), (41, 7021680), (48, 5997685), (51, 5644880), (60, 4798148), (68, 4233660), (80, 3598611), (82, 3510840), (85, 3386928), (102, 2822440), (120, 2399074), (123, 2340560), (136, 2116830), (164, 1755420), (170, 1693464), (204, 1411220), (205, 1404336), (240, 1199537), (246, 1170280), (255, 1128976), (272, 1058415), (328, 877710), (340, 846732), (408, 705610), (410, 702168), (492, 585140), (510, 564488), (615, 468112), (656, 438855), (680, 423366), (697, 413040), (816, 352805), (820, 351084), (984, 292570), (1020, 282244), (1230, 234056), (1360, 211683), (1394, 206520), (1640, 175542), (1721, 167280), (1968, 146285), (2040, 141122), (2091, 137680), (2460, 117028), (2788, 103260), (3280, 87771), (3442, 83640), (3485, 82608), (4080, 70561), (4182, 68840), (4920, 58514), (5163, 55760), (5576, 51630), (6884, 41820), (6970, 41304), (8364, 34420), (8605, 33456), (9840, 29257), (10326, 27880), (10455, 27536), (11152, 25815), (13768, 20910), (13940, 20652), (16728, 17210)]