31780515

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2063}}^1$

素因数の和:2163

約数の個数: 32

約数和(自身を含む): 55480320

約数和(自身を除く): 23699805

約数列:

[1, 3, 5, 13, 15, 39, 65, 79, 195, 237, 395, 1027, 1185, 2063, 3081, 5135, 6189, 10315, 15405, 26819, 30945, 80457, 134095, 162977, 402285, 488931, 814885, 2118701, 2444655, 6356103, 10593505, 31780515]

約数ペア:

[(1, 31780515), (3, 10593505), (5, 6356103), (13, 2444655), (15, 2118701), (39, 814885), (65, 488931), (79, 402285), (195, 162977), (237, 134095), (395, 80457), (1027, 30945), (1185, 26819), (2063, 15405), (3081, 10315), (5135, 6189)]