19045640

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1531}}^1$

素因数の和:1853

約数の個数: 32

約数和(自身を含む): 43018560

約数和(自身を除く): 23972920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1531, 1555, 2488, 3062, 3110, 6124, 6220, 7655, 12248, 12440, 15310, 30620, 61240, 476141, 952282, 1904564, 2380705, 3809128, 4761410, 9522820, 19045640]

約数ペア:

[(1, 19045640), (2, 9522820), (4, 4761410), (5, 3809128), (8, 2380705), (10, 1904564), (20, 952282), (40, 476141), (311, 61240), (622, 30620), (1244, 15310), (1531, 12440), (1555, 12248), (2488, 7655), (3062, 6220), (3110, 6124)]