20164540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{607}}^1$

素因数の和:778

約数の個数: 48

約数和(自身を含む): 46577664

約数和(自身を除く): 26413124

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 151, 220, 302, 604, 607, 755, 1214, 1510, 1661, 2428, 3020, 3035, 3322, 6070, 6644, 6677, 8305, 12140, 13354, 16610, 26708, 33220, 33385, 66770, 91657, 133540, 183314, 366628, 458285, 916570, 1008227, 1833140, 2016454, 4032908, 5041135, 10082270, 20164540]

約数ペア:

[(1, 20164540), (2, 10082270), (4, 5041135), (5, 4032908), (10, 2016454), (11, 1833140), (20, 1008227), (22, 916570), (44, 458285), (55, 366628), (110, 183314), (151, 133540), (220, 91657), (302, 66770), (604, 33385), (607, 33220), (755, 26708), (1214, 16610), (1510, 13354), (1661, 12140), (2428, 8305), (3020, 6677), (3035, 6644), (3322, 6070)]