81220945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{9839}}^1$

素因数の和:9984

約数の個数: 16

約数和(自身を含む): 105799680

約数和(自身を除く): 24578735

約数列:

[1, 5, 13, 65, 127, 635, 1651, 8255, 9839, 49195, 127907, 639535, 1249553, 6247765, 16244189, 81220945]

約数ペア:

[(1, 81220945), (5, 16244189), (13, 6247765), (65, 1249553), (127, 639535), (635, 127907), (1651, 49195), (8255, 9839)]