81117790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{623983}}^1$

素因数の和:624003

約数の個数: 16

約数和(自身を含む): 157243968

約数和(自身を除く): 76126178

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 623983, 1247966, 3119915, 6239830, 8111779, 16223558, 40558895, 81117790]

約数ペア:

[(1, 81117790), (2, 40558895), (5, 16223558), (10, 8111779), (13, 6239830), (26, 3119915), (65, 1247966), (130, 623983)]