21302309

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{239}}^1$

素因数の和:377

約数の個数: 24

約数和(自身を含む): 26593920

約数和(自身を除く): 5291611

約数列:

[1, 7, 17, 49, 107, 119, 239, 749, 833, 1673, 1819, 4063, 5243, 11711, 12733, 25573, 28441, 89131, 179011, 199087, 434741, 1253077, 3043187, 21302309]

約数ペア:

[(1, 21302309), (7, 3043187), (17, 1253077), (49, 434741), (107, 199087), (119, 179011), (239, 89131), (749, 28441), (833, 25573), (1673, 12733), (1819, 11711), (4063, 5243)]