20791390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1427}}^1$

素因数の和:1512

約数の個数: 32

約数和(自身を含む): 39481344

約数和(自身を除く): 18689954

約数列:

[1, 2, 5, 10, 31, 47, 62, 94, 155, 235, 310, 470, 1427, 1457, 2854, 2914, 7135, 7285, 14270, 14570, 44237, 67069, 88474, 134138, 221185, 335345, 442370, 670690, 2079139, 4158278, 10395695, 20791390]

約数ペア:

[(1, 20791390), (2, 10395695), (5, 4158278), (10, 2079139), (31, 670690), (47, 442370), (62, 335345), (94, 221185), (155, 134138), (235, 88474), (310, 67069), (470, 44237), (1427, 14570), (1457, 14270), (2854, 7285), (2914, 7135)]