1321220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2131}}^1$

素因数の和:2171

約数の個数: 24

約数和(自身を含む): 2865408

約数和(自身を除く): 1544188

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 2131, 4262, 8524, 10655, 21310, 42620, 66061, 132122, 264244, 330305, 660610, 1321220]

約数ペア:

[(1, 1321220), (2, 660610), (4, 330305), (5, 264244), (10, 132122), (20, 66061), (31, 42620), (62, 21310), (124, 10655), (155, 8524), (310, 4262), (620, 2131)]