21376615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{911}}^1$

素因数の和:967

約数の個数: 24

約数和(自身を含む): 29187648

約数和(自身を除く): 7811033

約数列:

[1, 5, 13, 19, 65, 95, 247, 361, 911, 1235, 1805, 4555, 4693, 11843, 17309, 23465, 59215, 86545, 225017, 328871, 1125085, 1644355, 4275323, 21376615]

約数ペア:

[(1, 21376615), (5, 4275323), (13, 1644355), (19, 1125085), (65, 328871), (95, 225017), (247, 86545), (361, 59215), (911, 23465), (1235, 17309), (1805, 11843), (4555, 4693)]