87487660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{336491}}^1$

素因数の和:336513

約数の個数: 24

約数和(自身を含む): 197857296

約数和(自身を除く): 110369636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 336491, 672982, 1345964, 1682455, 3364910, 4374383, 6729820, 8748766, 17497532, 21871915, 43743830, 87487660]

約数ペア:

[(1, 87487660), (2, 43743830), (4, 21871915), (5, 17497532), (10, 8748766), (13, 6729820), (20, 4374383), (26, 3364910), (52, 1682455), (65, 1345964), (130, 672982), (260, 336491)]