2143505

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{673}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 3227112

約数和(自身を除く): 1083607

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 673, 3185, 3365, 4711, 8749, 23555, 32977, 43745, 61243, 164885, 306215, 428701, 2143505]

約数ペア:

[(1, 2143505), (5, 428701), (7, 306215), (13, 164885), (35, 61243), (49, 43745), (65, 32977), (91, 23555), (245, 8749), (455, 4711), (637, 3365), (673, 3185)]