231910640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{222991}}^1$

素因数の和:223017

約数の個数: 40

約数和(自身を含む): 580671168

約数和(自身を除く): 348760528

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 222991, 445982, 891964, 1114955, 1783928, 2229910, 2898883, 3567856, 4459820, 5797766, 8919640, 11595532, 14494415, 17839280, 23191064, 28988830, 46382128, 57977660, 115955320, 231910640]

約数ペア:

[(1, 231910640), (2, 115955320), (4, 57977660), (5, 46382128), (8, 28988830), (10, 23191064), (13, 17839280), (16, 14494415), (20, 11595532), (26, 8919640), (40, 5797766), (52, 4459820), (65, 3567856), (80, 2898883), (104, 2229910), (130, 1783928), (208, 1114955), (260, 891964), (520, 445982), (1040, 222991)]