21000000548

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{631}}^1\times {\mathrm{124181}}^1$

素因数の和:124883

約数の個数: 24

約数和(自身を含む): 37357919424

約数和(自身を除く): 16357918876

約数列:

[1, 2, 4, 67, 134, 268, 631, 1262, 2524, 42277, 84554, 124181, 169108, 248362, 496724, 8320127, 16640254, 33280508, 78358211, 156716422, 313432844, 5250000137, 10500000274, 21000000548]

約数ペア:

[(1, 21000000548), (2, 10500000274), (4, 5250000137), (67, 313432844), (134, 156716422), (268, 78358211), (631, 33280508), (1262, 16640254), (2524, 8320127), (42277, 496724), (84554, 248362), (124181, 169108)]