21497440

素因数分解:

$2^5\times 5^1\times {\mathrm{134359}}^1$

素因数の和:134374

約数の個数: 24

約数和(自身を含む): 50788080

約数和(自身を除く): 29290640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 134359, 268718, 537436, 671795, 1074872, 1343590, 2149744, 2687180, 4299488, 5374360, 10748720, 21497440]

約数ペア:

[(1, 21497440), (2, 10748720), (4, 5374360), (5, 4299488), (8, 2687180), (10, 2149744), (16, 1343590), (20, 1074872), (32, 671795), (40, 537436), (80, 268718), (160, 134359)]