21385341

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{419}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 31842720

約数和(自身を除く): 10457379

約数列:

[1, 3, 9, 53, 107, 159, 321, 419, 477, 963, 1257, 3771, 5671, 17013, 22207, 44833, 51039, 66621, 134499, 199863, 403497, 2376149, 7128447, 21385341]

約数ペア:

[(1, 21385341), (3, 7128447), (9, 2376149), (53, 403497), (107, 199863), (159, 134499), (321, 66621), (419, 51039), (477, 44833), (963, 22207), (1257, 17013), (3771, 5671)]