20916940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3067}}^1$

素因数の和:3118

約数の個数: 48

約数和(自身を含む): 49480704

約数和(自身を除く): 28563764

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3067, 3410, 6134, 6820, 12268, 15335, 30670, 33737, 61340, 67474, 95077, 134948, 168685, 190154, 337370, 380308, 475385, 674740, 950770, 1045847, 1901540, 2091694, 4183388, 5229235, 10458470, 20916940]

約数ペア:

[(1, 20916940), (2, 10458470), (4, 5229235), (5, 4183388), (10, 2091694), (11, 1901540), (20, 1045847), (22, 950770), (31, 674740), (44, 475385), (55, 380308), (62, 337370), (110, 190154), (124, 168685), (155, 134948), (220, 95077), (310, 67474), (341, 61340), (620, 33737), (682, 30670), (1364, 15335), (1705, 12268), (3067, 6820), (3410, 6134)]