18213205

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^2\times {\mathrm{97}}^1$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 23888088

約数和(自身を除く): 5674883

約数列:

[1, 5, 17, 47, 85, 97, 235, 485, 799, 1649, 2209, 3995, 4559, 8245, 11045, 22795, 37553, 77503, 187765, 214273, 387515, 1071365, 3642641, 18213205]

約数ペア:

[(1, 18213205), (5, 3642641), (17, 1071365), (47, 387515), (85, 214273), (97, 187765), (235, 77503), (485, 37553), (799, 22795), (1649, 11045), (2209, 8245), (3995, 4559)]