21100000012

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{172009}}^1$

素因数の和:172370

約数の個数: 48

約数和(自身を含む): 45581273920

約数和(自身を除く): 24481273908

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 337, 364, 674, 1348, 2359, 4381, 4718, 8762, 9436, 17524, 30667, 61334, 122668, 172009, 344018, 688036, 1204063, 2236117, 2408126, 4472234, 4816252, 8944468, 15652819, 31305638, 57967033, 62611276, 115934066, 231868132, 405769231, 753571429, 811538462, 1507142858, 1623076924, 3014285716, 5275000003, 10550000006, 21100000012]

約数ペア:

[(1, 21100000012), (2, 10550000006), (4, 5275000003), (7, 3014285716), (13, 1623076924), (14, 1507142858), (26, 811538462), (28, 753571429), (52, 405769231), (91, 231868132), (182, 115934066), (337, 62611276), (364, 57967033), (674, 31305638), (1348, 15652819), (2359, 8944468), (4381, 4816252), (4718, 4472234), (8762, 2408126), (9436, 2236117), (17524, 1204063), (30667, 688036), (61334, 344018), (122668, 172009)]