21858440

素因数分解:

$2^3\times 5^1\times {\mathrm{546461}}^1$

素因数の和:546472

約数の個数: 16

約数和(自身を含む): 49181580

約数和(自身を除く): 27323140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 546461, 1092922, 2185844, 2732305, 4371688, 5464610, 10929220, 21858440]

約数ペア:

[(1, 21858440), (2, 10929220), (4, 5464610), (5, 4371688), (8, 2732305), (10, 2185844), (20, 1092922), (40, 546461)]