20500870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{881}}^1$

素因数の和:1080

約数の個数: 32

約数和(自身を含む): 40007520

約数和(自身を除く): 19506650

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 179, 358, 881, 895, 1762, 1790, 2327, 4405, 4654, 8810, 11453, 11635, 22906, 23270, 57265, 114530, 157699, 315398, 788495, 1576990, 2050087, 4100174, 10250435, 20500870]

約数ペア:

[(1, 20500870), (2, 10250435), (5, 4100174), (10, 2050087), (13, 1576990), (26, 788495), (65, 315398), (130, 157699), (179, 114530), (358, 57265), (881, 23270), (895, 22906), (1762, 11635), (1790, 11453), (2327, 8810), (4405, 4654)]