18974930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{643}}^1$

素因数の和:890

約数の個数: 32

約数和(自身を含む): 37001664

約数和(自身を除く): 18026734

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 227, 454, 643, 1135, 1286, 2270, 2951, 3215, 5902, 6430, 8359, 14755, 16718, 29510, 41795, 83590, 145961, 291922, 729805, 1459610, 1897493, 3794986, 9487465, 18974930]

約数ペア:

[(1, 18974930), (2, 9487465), (5, 3794986), (10, 1897493), (13, 1459610), (26, 729805), (65, 291922), (130, 145961), (227, 83590), (454, 41795), (643, 29510), (1135, 16718), (1286, 14755), (2270, 8359), (2951, 6430), (3215, 5902)]