31505980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{277}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 74539584

約数和(自身を除く): 43033604

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 121, 188, 220, 235, 242, 277, 470, 484, 517, 554, 605, 940, 1034, 1108, 1210, 1385, 2068, 2420, 2585, 2770, 3047, 5170, 5540, 5687, 6094, 10340, 11374, 12188, 13019, 15235, 22748, 26038, 28435, 30470, 33517, 52076, 56870, 60940, 65095, 67034, 113740, 130190, 134068, 143209, 167585, 260380, 286418, 335170, 572836, 670340, 716045, 1432090, 1575299, 2864180, 3150598, 6301196, 7876495, 15752990, 31505980]

約数ペア:

[(1, 31505980), (2, 15752990), (4, 7876495), (5, 6301196), (10, 3150598), (11, 2864180), (20, 1575299), (22, 1432090), (44, 716045), (47, 670340), (55, 572836), (94, 335170), (110, 286418), (121, 260380), (188, 167585), (220, 143209), (235, 134068), (242, 130190), (277, 113740), (470, 67034), (484, 65095), (517, 60940), (554, 56870), (605, 52076), (940, 33517), (1034, 30470), (1108, 28435), (1210, 26038), (1385, 22748), (2068, 15235), (2420, 13019), (2585, 12188), (2770, 11374), (3047, 10340), (5170, 6094), (5540, 5687)]