19810455

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{26953}}^1$

素因数の和:26975

約数の個数: 24

約数和(自身を含む): 36873072

約数和(自身を除く): 17062617

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 26953, 80859, 134765, 188671, 404295, 566013, 943355, 1320697, 2830065, 3962091, 6603485, 19810455]

約数ペア:

[(1, 19810455), (3, 6603485), (5, 3962091), (7, 2830065), (15, 1320697), (21, 943355), (35, 566013), (49, 404295), (105, 188671), (147, 134765), (245, 80859), (735, 26953)]