28661680

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:494

約数の個数: 80

約数和(自身を含む): 71584704

約数和(自身を除く): 42923024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 37, 40, 46, 74, 80, 92, 115, 148, 184, 185, 230, 296, 368, 370, 421, 460, 592, 740, 842, 851, 920, 1480, 1684, 1702, 1840, 2105, 2960, 3368, 3404, 4210, 4255, 6736, 6808, 8420, 8510, 9683, 13616, 15577, 16840, 17020, 19366, 31154, 33680, 34040, 38732, 48415, 62308, 68080, 77464, 77885, 96830, 124616, 154928, 155770, 193660, 249232, 311540, 358271, 387320, 623080, 716542, 774640, 1246160, 1433084, 1791355, 2866168, 3582710, 5732336, 7165420, 14330840, 28661680]

約数ペア:

[(1, 28661680), (2, 14330840), (4, 7165420), (5, 5732336), (8, 3582710), (10, 2866168), (16, 1791355), (20, 1433084), (23, 1246160), (37, 774640), (40, 716542), (46, 623080), (74, 387320), (80, 358271), (92, 311540), (115, 249232), (148, 193660), (184, 155770), (185, 154928), (230, 124616), (296, 96830), (368, 77885), (370, 77464), (421, 68080), (460, 62308), (592, 48415), (740, 38732), (842, 34040), (851, 33680), (920, 31154), (1480, 19366), (1684, 17020), (1702, 16840), (1840, 15577), (2105, 13616), (2960, 9683), (3368, 8510), (3404, 8420), (4210, 6808), (4255, 6736)]