21645230

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 39960000

約数和(自身を除く): 18314770

約数列:

[1, 2, 5, 10, 73, 146, 149, 199, 298, 365, 398, 730, 745, 995, 1490, 1990, 10877, 14527, 21754, 29054, 29651, 54385, 59302, 72635, 108770, 145270, 148255, 296510, 2164523, 4329046, 10822615, 21645230]

約数ペア:

[(1, 21645230), (2, 10822615), (5, 4329046), (10, 2164523), (73, 296510), (146, 148255), (149, 145270), (199, 108770), (298, 72635), (365, 59302), (398, 54385), (730, 29651), (745, 29054), (995, 21754), (1490, 14527), (1990, 10877)]