31172020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{1171}}^1$

素因数の和:1213

約数の個数: 48

約数和(自身を含む): 72063936

約数和(自身を除く): 40891916

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1171, 1210, 1331, 2342, 2420, 2662, 4684, 5324, 5855, 6655, 11710, 12881, 13310, 23420, 25762, 26620, 51524, 64405, 128810, 141691, 257620, 283382, 566764, 708455, 1416910, 1558601, 2833820, 3117202, 6234404, 7793005, 15586010, 31172020]

約数ペア:

[(1, 31172020), (2, 15586010), (4, 7793005), (5, 6234404), (10, 3117202), (11, 2833820), (20, 1558601), (22, 1416910), (44, 708455), (55, 566764), (110, 283382), (121, 257620), (220, 141691), (242, 128810), (484, 64405), (605, 51524), (1171, 26620), (1210, 25762), (1331, 23420), (2342, 13310), (2420, 12881), (2662, 11710), (4684, 6655), (5324, 5855)]