81963380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{132199}}^1$

素因数の和:132239

約数の個数: 24

約数和(自身を含む): 177676800

約数和(自身を除く): 95713420

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 132199, 264398, 528796, 660995, 1321990, 2643980, 4098169, 8196338, 16392676, 20490845, 40981690, 81963380]

約数ペア:

[(1, 81963380), (2, 40981690), (4, 20490845), (5, 16392676), (10, 8196338), (20, 4098169), (31, 2643980), (62, 1321990), (124, 660995), (155, 528796), (310, 264398), (620, 132199)]