31530620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{571}}^1$

素因数の和:842

約数の個数: 48

約数和(自身を含む): 72648576

約数和(自身を除く): 41117956

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 251, 502, 571, 1004, 1142, 1255, 2284, 2510, 2761, 2855, 5020, 5522, 5710, 6281, 11044, 11420, 12562, 13805, 25124, 27610, 31405, 55220, 62810, 125620, 143321, 286642, 573284, 716605, 1433210, 1576531, 2866420, 3153062, 6306124, 7882655, 15765310, 31530620]

約数ペア:

[(1, 31530620), (2, 15765310), (4, 7882655), (5, 6306124), (10, 3153062), (11, 2866420), (20, 1576531), (22, 1433210), (44, 716605), (55, 573284), (110, 286642), (220, 143321), (251, 125620), (502, 62810), (571, 55220), (1004, 31405), (1142, 27610), (1255, 25124), (2284, 13805), (2510, 12562), (2761, 11420), (2855, 11044), (5020, 6281), (5522, 5710)]