21151844

素因数分解:

$2^2\times 7^1\times {\mathrm{409}}^1\times {\mathrm{1847}}^1$

素因数の和:2267

約数の個数: 24

約数和(自身を含む): 42430080

約数和(自身を除く): 21278236

約数列:

[1, 2, 4, 7, 14, 28, 409, 818, 1636, 1847, 2863, 3694, 5726, 7388, 11452, 12929, 25858, 51716, 755423, 1510846, 3021692, 5287961, 10575922, 21151844]

約数ペア:

[(1, 21151844), (2, 10575922), (4, 5287961), (7, 3021692), (14, 1510846), (28, 755423), (409, 51716), (818, 25858), (1636, 12929), (1847, 11452), (2863, 7388), (3694, 5726)]