21912597

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{3191}}^1$

素因数の和:3313

約数の個数: 24

約数和(自身を含む): 36516480

約数和(自身を除く): 14603883

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 763, 981, 2289, 3191, 6867, 9573, 22337, 28719, 67011, 201033, 347819, 1043457, 2434733, 3130371, 7304199, 21912597]

約数ペア:

[(1, 21912597), (3, 7304199), (7, 3130371), (9, 2434733), (21, 1043457), (63, 347819), (109, 201033), (327, 67011), (763, 28719), (981, 22337), (2289, 9573), (3191, 6867)]