21645783

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1973}}^1$

素因数の和:2055

約数の個数: 24

約数和(自身を含む): 33257952

約数和(自身を除く): 11612169

約数列:

[1, 3, 9, 23, 53, 69, 159, 207, 477, 1219, 1973, 3657, 5919, 10971, 17757, 45379, 104569, 136137, 313707, 408411, 941121, 2405087, 7215261, 21645783]

約数ペア:

[(1, 21645783), (3, 7215261), (9, 2405087), (23, 941121), (53, 408411), (69, 313707), (159, 136137), (207, 104569), (477, 45379), (1219, 17757), (1973, 10971), (3657, 5919)]