18620810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{631}}^1$

素因数の和:878

約数の個数: 32

約数和(自身を含む): 36312192

約数和(自身を除く): 17691382

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 227, 454, 631, 1135, 1262, 2270, 2951, 3155, 5902, 6310, 8203, 14755, 16406, 29510, 41015, 82030, 143237, 286474, 716185, 1432370, 1862081, 3724162, 9310405, 18620810]

約数ペア:

[(1, 18620810), (2, 9310405), (5, 3724162), (10, 1862081), (13, 1432370), (26, 716185), (65, 286474), (130, 143237), (227, 82030), (454, 41015), (631, 29510), (1135, 16406), (1262, 14755), (2270, 8203), (2951, 6310), (3155, 5902)]