66638115

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20857}}^1$

素因数の和:20939

約数の個数: 24

約数和(自身を含む): 117138528

約数和(自身を除く): 50500413

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 20857, 62571, 104285, 187713, 312855, 938565, 1480847, 4442541, 7404235, 13327623, 22212705, 66638115]

約数ペア:

[(1, 66638115), (3, 22212705), (5, 13327623), (9, 7404235), (15, 4442541), (45, 1480847), (71, 938565), (213, 312855), (355, 187713), (639, 104285), (1065, 62571), (3195, 20857)]