21878730

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{859}}^1$

素因数の和:1155

約数の個数: 48

約数和(自身を含む): 57152160

約数和(自身を除く): 35273430

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 283, 566, 849, 859, 1415, 1698, 1718, 2547, 2577, 2830, 4245, 4295, 5094, 5154, 7731, 8490, 8590, 12735, 12885, 15462, 25470, 25770, 38655, 77310, 243097, 486194, 729291, 1215485, 1458582, 2187873, 2430970, 3646455, 4375746, 7292910, 10939365, 21878730]

約数ペア:

[(1, 21878730), (2, 10939365), (3, 7292910), (5, 4375746), (6, 3646455), (9, 2430970), (10, 2187873), (15, 1458582), (18, 1215485), (30, 729291), (45, 486194), (90, 243097), (283, 77310), (566, 38655), (849, 25770), (859, 25470), (1415, 15462), (1698, 12885), (1718, 12735), (2547, 8590), (2577, 8490), (2830, 7731), (4245, 5154), (4295, 5094)]