31908890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 63244800

約数和(自身を除く): 31335910

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 169, 239, 338, 395, 478, 790, 845, 1027, 1195, 1690, 2054, 2390, 3107, 5135, 6214, 10270, 13351, 15535, 18881, 26702, 31070, 37762, 40391, 66755, 80782, 94405, 133510, 188810, 201955, 245453, 403910, 490906, 1227265, 2454530, 3190889, 6381778, 15954445, 31908890]

約数ペア:

[(1, 31908890), (2, 15954445), (5, 6381778), (10, 3190889), (13, 2454530), (26, 1227265), (65, 490906), (79, 403910), (130, 245453), (158, 201955), (169, 188810), (239, 133510), (338, 94405), (395, 80782), (478, 66755), (790, 40391), (845, 37762), (1027, 31070), (1195, 26702), (1690, 18881), (2054, 15535), (2390, 13351), (3107, 10270), (5135, 6214)]