20274980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{587}}^1$

素因数の和:764

約数の個数: 48

約数和(自身を含む): 46823616

約数和(自身を除く): 26548636

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 220, 314, 587, 628, 785, 1174, 1570, 1727, 2348, 2935, 3140, 3454, 5870, 6457, 6908, 8635, 11740, 12914, 17270, 25828, 32285, 34540, 64570, 92159, 129140, 184318, 368636, 460795, 921590, 1013749, 1843180, 2027498, 4054996, 5068745, 10137490, 20274980]

約数ペア:

[(1, 20274980), (2, 10137490), (4, 5068745), (5, 4054996), (10, 2027498), (11, 1843180), (20, 1013749), (22, 921590), (44, 460795), (55, 368636), (110, 184318), (157, 129140), (220, 92159), (314, 64570), (587, 34540), (628, 32285), (785, 25828), (1174, 17270), (1570, 12914), (1727, 11740), (2348, 8635), (2935, 6908), (3140, 6457), (3454, 5870)]