18902045

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:269

約数の個数: 24

約数和(自身を含む): 24520704

約数和(自身を除く): 5618659

約数列:

[1, 5, 17, 85, 103, 127, 289, 515, 635, 1445, 1751, 2159, 8755, 10795, 13081, 29767, 36703, 65405, 148835, 183515, 222377, 1111885, 3780409, 18902045]

約数ペア:

[(1, 18902045), (5, 3780409), (17, 1111885), (85, 222377), (103, 183515), (127, 148835), (289, 65405), (515, 36703), (635, 29767), (1445, 13081), (1751, 10795), (2159, 8755)]