21915621

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26759}}^1$

素因数の和:26785

約数の個数: 24

約数和(自身を含む): 38962560

約数和(自身を除く): 17046939

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26759, 80277, 187313, 240831, 347867, 561939, 1043601, 1685817, 2435069, 3130803, 7305207, 21915621]

約数ペア:

[(1, 21915621), (3, 7305207), (7, 3130803), (9, 2435069), (13, 1685817), (21, 1043601), (39, 561939), (63, 347867), (91, 240831), (117, 187313), (273, 80277), (819, 26759)]