217125615

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{17377}}^1$

素因数の和:17416

約数の個数: 48

約数和(自身を含む): 427915872

約数和(自身を除く): 210790257

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 49, 51, 85, 105, 119, 147, 245, 255, 357, 595, 735, 833, 1785, 2499, 4165, 12495, 17377, 52131, 86885, 121639, 260655, 295409, 364917, 608195, 851473, 886227, 1477045, 1824585, 2067863, 2554419, 4257365, 4431135, 6203589, 10339315, 12772095, 14475041, 31017945, 43425123, 72375205, 217125615]

約数ペア:

[(1, 217125615), (3, 72375205), (5, 43425123), (7, 31017945), (15, 14475041), (17, 12772095), (21, 10339315), (35, 6203589), (49, 4431135), (51, 4257365), (85, 2554419), (105, 2067863), (119, 1824585), (147, 1477045), (245, 886227), (255, 851473), (357, 608195), (595, 364917), (735, 295409), (833, 260655), (1785, 121639), (2499, 86885), (4165, 52131), (12495, 17377)]