31990450

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{20639}}^1$

素因数の和:20682

約数の個数: 24

約数和(自身を含む): 61424640

約数和(自身を除く): 29434190

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 310, 775, 1550, 20639, 41278, 103195, 206390, 515975, 639809, 1031950, 1279618, 3199045, 6398090, 15995225, 31990450]

約数ペア:

[(1, 31990450), (2, 15995225), (5, 6398090), (10, 3199045), (25, 1279618), (31, 1031950), (50, 639809), (62, 515975), (155, 206390), (310, 103195), (775, 41278), (1550, 20639)]