18896990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2389}}^1$

素因数の和:2516

約数の個数: 32

約数和(自身を含む): 39234240

約数和(自身を除く): 20337250

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 113, 226, 565, 791, 1130, 1582, 2389, 3955, 4778, 7910, 11945, 16723, 23890, 33446, 83615, 167230, 269957, 539914, 1349785, 1889699, 2699570, 3779398, 9448495, 18896990]

約数ペア:

[(1, 18896990), (2, 9448495), (5, 3779398), (7, 2699570), (10, 1889699), (14, 1349785), (35, 539914), (70, 269957), (113, 167230), (226, 83615), (565, 33446), (791, 23890), (1130, 16723), (1582, 11945), (2389, 7910), (3955, 4778)]