20996115

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{557}}^1$

素因数の和:931

約数の個数: 32

約数和(自身を含む): 38568960

約数和(自身を除く): 17572845

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 359, 557, 1077, 1671, 1795, 2513, 2785, 3899, 5385, 7539, 8355, 11697, 12565, 19495, 37695, 58485, 199963, 599889, 999815, 1399741, 2999445, 4199223, 6998705, 20996115]

約数ペア:

[(1, 20996115), (3, 6998705), (5, 4199223), (7, 2999445), (15, 1399741), (21, 999815), (35, 599889), (105, 199963), (359, 58485), (557, 37695), (1077, 19495), (1671, 12565), (1795, 11697), (2513, 8355), (2785, 7539), (3899, 5385)]