21187010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2063}}^1$

素因数の和:2162

約数の個数: 32

約数和(自身を含む): 41610240

約数和(自身を除く): 20423230

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 2054, 2063, 4126, 5135, 10270, 10315, 20630, 26819, 53638, 134095, 162977, 268190, 325954, 814885, 1629770, 2118701, 4237402, 10593505, 21187010]

約数ペア:

[(1, 21187010), (2, 10593505), (5, 4237402), (10, 2118701), (13, 1629770), (26, 814885), (65, 325954), (79, 268190), (130, 162977), (158, 134095), (395, 53638), (790, 26819), (1027, 20630), (2054, 10315), (2063, 10270), (4126, 5135)]