31651960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 76399200

約数和(自身を除く): 44747240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 89, 136, 170, 178, 340, 356, 445, 523, 680, 712, 890, 1046, 1513, 1780, 2092, 2615, 3026, 3560, 4184, 5230, 6052, 7565, 8891, 10460, 12104, 15130, 17782, 20920, 30260, 35564, 44455, 46547, 60520, 71128, 88910, 93094, 177820, 186188, 232735, 355640, 372376, 465470, 791299, 930940, 1582598, 1861880, 3165196, 3956495, 6330392, 7912990, 15825980, 31651960]

約数ペア:

[(1, 31651960), (2, 15825980), (4, 7912990), (5, 6330392), (8, 3956495), (10, 3165196), (17, 1861880), (20, 1582598), (34, 930940), (40, 791299), (68, 465470), (85, 372376), (89, 355640), (136, 232735), (170, 186188), (178, 177820), (340, 93094), (356, 88910), (445, 71128), (523, 60520), (680, 46547), (712, 44455), (890, 35564), (1046, 30260), (1513, 20920), (1780, 17782), (2092, 15130), (2615, 12104), (3026, 10460), (3560, 8891), (4184, 7565), (5230, 6052)]