18771995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{1181}}^1$

素因数の和:1231

約数の個数: 24

約数和(自身を含む): 26126928

約数和(自身を除く): 7354933

約数列:

[1, 5, 11, 17, 55, 85, 187, 289, 935, 1181, 1445, 3179, 5905, 12991, 15895, 20077, 64955, 100385, 220847, 341309, 1104235, 1706545, 3754399, 18771995]

約数ペア:

[(1, 18771995), (5, 3754399), (11, 1706545), (17, 1104235), (55, 341309), (85, 220847), (187, 100385), (289, 64955), (935, 20077), (1181, 15895), (1445, 12991), (3179, 5905)]