18780668

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{487}}^1$

素因数の和:833

約数の個数: 24

約数和(自身を含む): 34105344

約数和(自身を除く): 15324676

約数列:

[1, 2, 4, 31, 62, 124, 311, 487, 622, 974, 1244, 1948, 9641, 15097, 19282, 30194, 38564, 60388, 151457, 302914, 605828, 4695167, 9390334, 18780668]

約数ペア:

[(1, 18780668), (2, 9390334), (4, 4695167), (31, 605828), (62, 302914), (124, 151457), (311, 60388), (487, 38564), (622, 30194), (974, 19282), (1244, 15097), (1948, 9641)]