217425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:249

約数の個数: 24

約数和(自身を含む): 388864

約数和(自身を除く): 171439

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 223, 325, 669, 975, 1115, 2899, 3345, 5575, 8697, 14495, 16725, 43485, 72475, 217425]

約数ペア:

[(1, 217425), (3, 72475), (5, 43485), (13, 16725), (15, 14495), (25, 8697), (39, 5575), (65, 3345), (75, 2899), (195, 1115), (223, 975), (325, 669)]