21198908

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{3821}}^1$

素因数の和:3917

約数の個数: 24

約数和(自身を含む): 39595920

約数和(自身を除く): 18397012

約数列:

[1, 2, 4, 19, 38, 73, 76, 146, 292, 1387, 2774, 3821, 5548, 7642, 15284, 72599, 145198, 278933, 290396, 557866, 1115732, 5299727, 10599454, 21198908]

約数ペア:

[(1, 21198908), (2, 10599454), (4, 5299727), (19, 1115732), (38, 557866), (73, 290396), (76, 278933), (146, 145198), (292, 72599), (1387, 15284), (2774, 7642), (3821, 5548)]