21677247

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{521}}^1$

素因数の和:620

約数の個数: 32

約数和(自身を含む): 34076160

約数和(自身を除く): 12398913

約数列:

[1, 3, 9, 23, 27, 67, 69, 201, 207, 521, 603, 621, 1541, 1563, 1809, 4623, 4689, 11983, 13869, 14067, 34907, 35949, 41607, 104721, 107847, 314163, 323541, 802861, 942489, 2408583, 7225749, 21677247]

約数ペア:

[(1, 21677247), (3, 7225749), (9, 2408583), (23, 942489), (27, 802861), (67, 323541), (69, 314163), (201, 107847), (207, 104721), (521, 41607), (603, 35949), (621, 34907), (1541, 14067), (1563, 13869), (1809, 11983), (4623, 4689)]