31305729

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{8821}}^1$

素因数の和:8857

約数の個数: 24

約数和(自身を含む): 51661632

約数和(自身を除く): 20355903

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 8821, 26463, 61747, 114673, 185241, 344019, 802711, 1490749, 2408133, 4472247, 10435243, 31305729]

約数ペア:

[(1, 31305729), (3, 10435243), (7, 4472247), (13, 2408133), (21, 1490749), (39, 802711), (91, 344019), (169, 185241), (273, 114673), (507, 61747), (1183, 26463), (3549, 8821)]