21903510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1487}}^1$

素因数の和:1988

約数の個数: 32

約数和(自身を含む): 52710912

約数和(自身を除く): 30807402

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 491, 982, 1473, 1487, 2455, 2946, 2974, 4461, 4910, 7365, 7435, 8922, 14730, 14870, 22305, 44610, 730117, 1460234, 2190351, 3650585, 4380702, 7301170, 10951755, 21903510]

約数ペア:

[(1, 21903510), (2, 10951755), (3, 7301170), (5, 4380702), (6, 3650585), (10, 2190351), (15, 1460234), (30, 730117), (491, 44610), (982, 22305), (1473, 14870), (1487, 14730), (2455, 8922), (2946, 7435), (2974, 7365), (4461, 4910)]