644204

素因数分解:

$2^2\times {\mathrm{11}}^5$

素因数の和:59

約数の個数: 18

約数和(自身を含む): 1240092

約数和(自身を除く): 595888

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 1331, 2662, 5324, 14641, 29282, 58564, 161051, 322102, 644204]

約数ペア:

[(1, 644204), (2, 322102), (4, 161051), (11, 58564), (22, 29282), (44, 14641), (121, 5324), (242, 2662), (484, 1331)]