21281288

素因数分解:

$2^3\times 7^2\times {\mathrm{233}}^2$

素因数の和:486

約数の個数: 36

約数和(自身を含む): 46617165

約数和(自身を除く): 25335877

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 233, 392, 466, 932, 1631, 1864, 3262, 6524, 11417, 13048, 22834, 45668, 54289, 91336, 108578, 217156, 380023, 434312, 760046, 1520092, 2660161, 3040184, 5320322, 10640644, 21281288]

約数ペア:

[(1, 21281288), (2, 10640644), (4, 5320322), (7, 3040184), (8, 2660161), (14, 1520092), (28, 760046), (49, 434312), (56, 380023), (98, 217156), (196, 108578), (233, 91336), (392, 54289), (466, 45668), (932, 22834), (1631, 13048), (1864, 11417), (3262, 6524)]