2640220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1091}}^1$

素因数の和:1122

約数の個数: 36

約数和(自身を含む): 6099912

約数和(自身を除く): 3459692

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1091, 1210, 2182, 2420, 4364, 5455, 10910, 12001, 21820, 24002, 48004, 60005, 120010, 132011, 240020, 264022, 528044, 660055, 1320110, 2640220]

約数ペア:

[(1, 2640220), (2, 1320110), (4, 660055), (5, 528044), (10, 264022), (11, 240020), (20, 132011), (22, 120010), (44, 60005), (55, 48004), (110, 24002), (121, 21820), (220, 12001), (242, 10910), (484, 5455), (605, 4364), (1091, 2420), (1210, 2182)]