21356856

素因数分解:

$2^3\times 3^2\times {\mathrm{191}}^1\times {\mathrm{1553}}^1$

素因数の和:1756

約数の個数: 48

約数和(自身を含む): 58181760

約数和(自身を除く): 36824904

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 191, 382, 573, 764, 1146, 1528, 1553, 1719, 2292, 3106, 3438, 4584, 4659, 6212, 6876, 9318, 12424, 13752, 13977, 18636, 27954, 37272, 55908, 111816, 296623, 593246, 889869, 1186492, 1779738, 2372984, 2669607, 3559476, 5339214, 7118952, 10678428, 21356856]

約数ペア:

[(1, 21356856), (2, 10678428), (3, 7118952), (4, 5339214), (6, 3559476), (8, 2669607), (9, 2372984), (12, 1779738), (18, 1186492), (24, 889869), (36, 593246), (72, 296623), (191, 111816), (382, 55908), (573, 37272), (764, 27954), (1146, 18636), (1528, 13977), (1553, 13752), (1719, 12424), (2292, 9318), (3106, 6876), (3438, 6212), (4584, 4659)]