19861015

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^2\times {\mathrm{139}}^1$

素因数の和:243

約数の個数: 24

約数和(自身を含む): 26051760

約数和(自身を除く): 6190745

約数列:

[1, 5, 17, 41, 85, 139, 205, 695, 697, 1681, 2363, 3485, 5699, 8405, 11815, 28495, 28577, 96883, 142885, 233659, 484415, 1168295, 3972203, 19861015]

約数ペア:

[(1, 19861015), (5, 3972203), (17, 1168295), (41, 484415), (85, 233659), (139, 142885), (205, 96883), (695, 28577), (697, 28495), (1681, 11815), (2363, 8405), (3485, 5699)]