213975

素因数分解:

$3^3\times 5^2\times {\mathrm{317}}^1$

素因数の和:336

約数の個数: 24

約数和(自身を含む): 394320

約数和(自身を除く): 180345

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 317, 675, 951, 1585, 2853, 4755, 7925, 8559, 14265, 23775, 42795, 71325, 213975]

約数ペア:

[(1, 213975), (3, 71325), (5, 42795), (9, 23775), (15, 14265), (25, 8559), (27, 7925), (45, 4755), (75, 2853), (135, 1585), (225, 951), (317, 675)]