18386540

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4357}}^1$

素因数の和:4577

約数の個数: 24

約数和(自身を含む): 38803632

約数和(自身を除く): 20417092

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4357, 8714, 17428, 21785, 43570, 87140, 919327, 1838654, 3677308, 4596635, 9193270, 18386540]

約数ペア:

[(1, 18386540), (2, 9193270), (4, 4596635), (5, 3677308), (10, 1838654), (20, 919327), (211, 87140), (422, 43570), (844, 21785), (1055, 17428), (2110, 8714), (4220, 4357)]