21985158

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{541}}^1$

素因数の和:1080

約数の個数: 32

約数和(自身を含む): 47531232

約数和(自身を除く): 25546074

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 521, 541, 1042, 1082, 1563, 1623, 3126, 3246, 6773, 7033, 13546, 14066, 20319, 21099, 40638, 42198, 281861, 563722, 845583, 1691166, 3664193, 7328386, 10992579, 21985158]

約数ペア:

[(1, 21985158), (2, 10992579), (3, 7328386), (6, 3664193), (13, 1691166), (26, 845583), (39, 563722), (78, 281861), (521, 42198), (541, 40638), (1042, 21099), (1082, 20319), (1563, 14066), (1623, 13546), (3126, 7033), (3246, 6773)]