20439236

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{17681}}^1$

素因数の和:17719

約数の個数: 18

約数和(自身を含む): 37998618

約数和(自身を除く): 17559382

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 17681, 35362, 70724, 300577, 601154, 1202308, 5109809, 10219618, 20439236]

約数ペア:

[(1, 20439236), (2, 10219618), (4, 5109809), (17, 1202308), (34, 601154), (68, 300577), (289, 70724), (578, 35362), (1156, 17681)]