81411590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{1453}}^1$

素因数の和:1904

約数の個数: 32

約数和(自身を含む): 158288256

約数和(自身を除く): 76876666

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 431, 862, 1453, 2155, 2906, 4310, 5603, 7265, 11206, 14530, 18889, 28015, 37778, 56030, 94445, 188890, 626243, 1252486, 3131215, 6262430, 8141159, 16282318, 40705795, 81411590]

約数ペア:

[(1, 81411590), (2, 40705795), (5, 16282318), (10, 8141159), (13, 6262430), (26, 3131215), (65, 1252486), (130, 626243), (431, 188890), (862, 94445), (1453, 56030), (2155, 37778), (2906, 28015), (4310, 18889), (5603, 14530), (7265, 11206)]