20122985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{3881}}^1$

素因数の和:3964

約数の個数: 16

約数和(自身を含む): 25993872

約数和(自身を除く): 5870887

約数列:

[1, 5, 17, 61, 85, 305, 1037, 3881, 5185, 19405, 65977, 236741, 329885, 1183705, 4024597, 20122985]

約数ペア:

[(1, 20122985), (5, 4024597), (17, 1183705), (61, 329885), (85, 236741), (305, 65977), (1037, 19405), (3881, 5185)]