21498872

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{86689}}^1$

素因数の和:86726

約数の個数: 16

約数和(自身を含む): 41611200

約数和(自身を除く): 20112328

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 86689, 173378, 346756, 693512, 2687359, 5374718, 10749436, 21498872]

約数ペア:

[(1, 21498872), (2, 10749436), (4, 5374718), (8, 2687359), (31, 693512), (62, 346756), (124, 173378), (248, 86689)]