31147820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:303

約数の個数: 72

約数和(自身を含む): 73422384

約数和(自身を除く): 42274564

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 121, 122, 211, 220, 242, 244, 305, 422, 484, 605, 610, 671, 844, 1055, 1210, 1220, 1342, 2110, 2321, 2420, 2684, 3355, 4220, 4642, 6710, 7381, 9284, 11605, 12871, 13420, 14762, 23210, 25531, 25742, 29524, 36905, 46420, 51062, 51484, 64355, 73810, 102124, 127655, 128710, 141581, 147620, 255310, 257420, 283162, 510620, 566324, 707905, 1415810, 1557391, 2831620, 3114782, 6229564, 7786955, 15573910, 31147820]

約数ペア:

[(1, 31147820), (2, 15573910), (4, 7786955), (5, 6229564), (10, 3114782), (11, 2831620), (20, 1557391), (22, 1415810), (44, 707905), (55, 566324), (61, 510620), (110, 283162), (121, 257420), (122, 255310), (211, 147620), (220, 141581), (242, 128710), (244, 127655), (305, 102124), (422, 73810), (484, 64355), (605, 51484), (610, 51062), (671, 46420), (844, 36905), (1055, 29524), (1210, 25742), (1220, 25531), (1342, 23210), (2110, 14762), (2321, 13420), (2420, 12871), (2684, 11605), (3355, 9284), (4220, 7381), (4642, 6710)]