19918680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1307}}^1$

素因数の和:1448

約数の個数: 64

約数和(自身を含む): 60272640

約数和(自身を除く): 40353960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 127, 254, 381, 508, 635, 762, 1016, 1270, 1307, 1524, 1905, 2540, 2614, 3048, 3810, 3921, 5080, 5228, 6535, 7620, 7842, 10456, 13070, 15240, 15684, 19605, 26140, 31368, 39210, 52280, 78420, 156840, 165989, 331978, 497967, 663956, 829945, 995934, 1327912, 1659890, 1991868, 2489835, 3319780, 3983736, 4979670, 6639560, 9959340, 19918680]

約数ペア:

[(1, 19918680), (2, 9959340), (3, 6639560), (4, 4979670), (5, 3983736), (6, 3319780), (8, 2489835), (10, 1991868), (12, 1659890), (15, 1327912), (20, 995934), (24, 829945), (30, 663956), (40, 497967), (60, 331978), (120, 165989), (127, 156840), (254, 78420), (381, 52280), (508, 39210), (635, 31368), (762, 26140), (1016, 19605), (1270, 15684), (1307, 15240), (1524, 13070), (1905, 10456), (2540, 7842), (2614, 7620), (3048, 6535), (3810, 5228), (3921, 5080)]