20580080

素因数分解:

$2^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1487}}^1$

素因数の和:1673

約数の個数: 40

約数和(自身を含む): 48157632

約数和(自身を除く): 27577552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 173, 346, 692, 865, 1384, 1487, 1730, 2768, 2974, 3460, 5948, 6920, 7435, 11896, 13840, 14870, 23792, 29740, 59480, 118960, 257251, 514502, 1029004, 1286255, 2058008, 2572510, 4116016, 5145020, 10290040, 20580080]

約数ペア:

[(1, 20580080), (2, 10290040), (4, 5145020), (5, 4116016), (8, 2572510), (10, 2058008), (16, 1286255), (20, 1029004), (40, 514502), (80, 257251), (173, 118960), (346, 59480), (692, 29740), (865, 23792), (1384, 14870), (1487, 13840), (1730, 11896), (2768, 7435), (2974, 6920), (3460, 5948)]