254785280

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6421}}^1$

素因数の和:6473

約数の個数: 72

約数和(自身を含む): 630075264

約数和(自身を除く): 375289984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 6421, 7936, 9920, 12842, 19840, 25684, 32105, 39680, 51368, 64210, 102736, 128420, 199051, 205472, 256840, 398102, 410944, 513680, 796204, 821888, 995255, 1027360, 1592408, 1643776, 1990510, 2054720, 3184816, 3981020, 4109440, 6369632, 7962040, 8218880, 12739264, 15924080, 25478528, 31848160, 50957056, 63696320, 127392640, 254785280]

約数ペア:

[(1, 254785280), (2, 127392640), (4, 63696320), (5, 50957056), (8, 31848160), (10, 25478528), (16, 15924080), (20, 12739264), (31, 8218880), (32, 7962040), (40, 6369632), (62, 4109440), (64, 3981020), (80, 3184816), (124, 2054720), (128, 1990510), (155, 1643776), (160, 1592408), (248, 1027360), (256, 995255), (310, 821888), (320, 796204), (496, 513680), (620, 410944), (640, 398102), (992, 256840), (1240, 205472), (1280, 199051), (1984, 128420), (2480, 102736), (3968, 64210), (4960, 51368), (6421, 39680), (7936, 32105), (9920, 25684), (12842, 19840)]