21852220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84047}}^1$

素因数の和:84069

約数の個数: 24

約数和(自身を含む): 49420224

約数和(自身を除く): 27568004

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84047, 168094, 336188, 420235, 840470, 1092611, 1680940, 2185222, 4370444, 5463055, 10926110, 21852220]

約数ペア:

[(1, 21852220), (2, 10926110), (4, 5463055), (5, 4370444), (10, 2185222), (13, 1680940), (20, 1092611), (26, 840470), (52, 420235), (65, 336188), (130, 168094), (260, 84047)]