19706281

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{577}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 24907176

約数和(自身を除く): 5200895

約数列:

[1, 7, 17, 41, 49, 119, 287, 577, 697, 833, 2009, 4039, 4879, 9809, 23657, 28273, 34153, 68663, 165599, 402169, 480641, 1159193, 2815183, 19706281]

約数ペア:

[(1, 19706281), (7, 2815183), (17, 1159193), (41, 480641), (49, 402169), (119, 165599), (287, 68663), (577, 34153), (697, 28273), (833, 23657), (2009, 9809), (4039, 4879)]