21912940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156521}}^1$

素因数の和:156537

約数の個数: 24

約数和(自身を含む): 52591392

約数和(自身を除く): 30678452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156521, 313042, 626084, 782605, 1095647, 1565210, 2191294, 3130420, 4382588, 5478235, 10956470, 21912940]

約数ペア:

[(1, 21912940), (2, 10956470), (4, 5478235), (5, 4382588), (7, 3130420), (10, 2191294), (14, 1565210), (20, 1095647), (28, 782605), (35, 626084), (70, 313042), (140, 156521)]