21038268

素因数分解:

$2^2\times 3^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 50448384

約数和(自身を除く): 29410116

約数列:

[1, 2, 3, 4, 6, 12, 67, 134, 137, 191, 201, 268, 274, 382, 402, 411, 548, 573, 764, 804, 822, 1146, 1644, 2292, 9179, 12797, 18358, 25594, 26167, 27537, 36716, 38391, 51188, 52334, 55074, 76782, 78501, 104668, 110148, 153564, 157002, 314004, 1753189, 3506378, 5259567, 7012756, 10519134, 21038268]

約数ペア:

[(1, 21038268), (2, 10519134), (3, 7012756), (4, 5259567), (6, 3506378), (12, 1753189), (67, 314004), (134, 157002), (137, 153564), (191, 110148), (201, 104668), (268, 78501), (274, 76782), (382, 55074), (402, 52334), (411, 51188), (548, 38391), (573, 36716), (764, 27537), (804, 26167), (822, 25594), (1146, 18358), (1644, 12797), (2292, 9179)]