21747693

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{181}}^1\times {\mathrm{331}}^1$

素因数の和:537

約数の個数: 24

約数和(自身を含む): 32145568

約数和(自身を除く): 10397875

約数列:

[1, 3, 11, 33, 121, 181, 331, 363, 543, 993, 1991, 3641, 5973, 10923, 21901, 40051, 59911, 65703, 120153, 179733, 659021, 1977063, 7249231, 21747693]

約数ペア:

[(1, 21747693), (3, 7249231), (11, 1977063), (33, 659021), (121, 179733), (181, 120153), (331, 65703), (363, 59911), (543, 40051), (993, 21901), (1991, 10923), (3641, 5973)]