31507580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{677}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 71759520

約数和(自身を除く): 40251940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 179, 260, 358, 677, 716, 895, 1354, 1790, 2327, 2708, 3385, 3580, 4654, 6770, 8801, 9308, 11635, 13540, 17602, 23270, 35204, 44005, 46540, 88010, 121183, 176020, 242366, 484732, 605915, 1211830, 1575379, 2423660, 3150758, 6301516, 7876895, 15753790, 31507580]

約数ペア:

[(1, 31507580), (2, 15753790), (4, 7876895), (5, 6301516), (10, 3150758), (13, 2423660), (20, 1575379), (26, 1211830), (52, 605915), (65, 484732), (130, 242366), (179, 176020), (260, 121183), (358, 88010), (677, 46540), (716, 44005), (895, 35204), (1354, 23270), (1790, 17602), (2327, 13540), (2708, 11635), (3385, 9308), (3580, 8801), (4654, 6770)]