21191716

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8317}}^1$

素因数の和:8348

約数の個数: 36

約数和(自身を含む): 46464348

約数和(自身を除く): 25272632

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8317, 16634, 33268, 58219, 108121, 116438, 216242, 232876, 407533, 432484, 756847, 815066, 1513694, 1630132, 3027388, 5297929, 10595858, 21191716]

約数ペア:

[(1, 21191716), (2, 10595858), (4, 5297929), (7, 3027388), (13, 1630132), (14, 1513694), (26, 815066), (28, 756847), (49, 432484), (52, 407533), (91, 232876), (98, 216242), (182, 116438), (196, 108121), (364, 58219), (637, 33268), (1274, 16634), (2548, 8317)]