31191820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4889}}^1$

素因数の和:4938

約数の個数: 48

約数和(自身を含む): 73936800

約数和(自身を除く): 42744980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 290, 319, 580, 638, 1276, 1595, 3190, 4889, 6380, 9778, 19556, 24445, 48890, 53779, 97780, 107558, 141781, 215116, 268895, 283562, 537790, 567124, 708905, 1075580, 1417810, 1559591, 2835620, 3119182, 6238364, 7797955, 15595910, 31191820]

約数ペア:

[(1, 31191820), (2, 15595910), (4, 7797955), (5, 6238364), (10, 3119182), (11, 2835620), (20, 1559591), (22, 1417810), (29, 1075580), (44, 708905), (55, 567124), (58, 537790), (110, 283562), (116, 268895), (145, 215116), (220, 141781), (290, 107558), (319, 97780), (580, 53779), (638, 48890), (1276, 24445), (1595, 19556), (3190, 9778), (4889, 6380)]