251491840

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3169}}^1$

素因数の和:3223

約数の個数: 80

約数和(自身を含む): 622638720

約数和(自身を除く): 371146880

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, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3169, 3968, 4960, 6338, 7936, 9920, 12676, 15845, 15872, 19840, 25352, 31690, 39680, 50704, 63380, 79360, 98239, 101408, 126760, 196478, 202816, 253520, 392956, 405632, 491195, 507040, 785912, 811264, 982390, 1014080, 1571824, 1622528, 1964780, 2028160, 3143648, 3929560, 4056320, 6287296, 7859120, 8112640, 12574592, 15718240, 25149184, 31436480, 50298368, 62872960, 125745920, 251491840]

約数ペア:

[(1, 251491840), (2, 125745920), (4, 62872960), (5, 50298368), (8, 31436480), (10, 25149184), (16, 15718240), (20, 12574592), (31, 8112640), (32, 7859120), (40, 6287296), (62, 4056320), (64, 3929560), (80, 3143648), (124, 2028160), (128, 1964780), (155, 1622528), (160, 1571824), (248, 1014080), (256, 982390), (310, 811264), (320, 785912), (496, 507040), (512, 491195), (620, 405632), (640, 392956), (992, 253520), (1240, 202816), (1280, 196478), (1984, 126760), (2480, 101408), (2560, 98239), (3169, 79360), (3968, 63380), (4960, 50704), (6338, 39680), (7936, 31690), (9920, 25352), (12676, 19840), (15845, 15872)]