247777240

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{61331}}^1$

素因数の和:61443

約数の個数: 32

約数和(自身を含む): 563027760

約数和(自身を除く): 315250520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 61331, 122662, 245324, 306655, 490648, 613310, 1226620, 2453240, 6194431, 12388862, 24777724, 30972155, 49555448, 61944310, 123888620, 247777240]

約数ペア:

[(1, 247777240), (2, 123888620), (4, 61944310), (5, 49555448), (8, 30972155), (10, 24777724), (20, 12388862), (40, 6194431), (101, 2453240), (202, 1226620), (404, 613310), (505, 490648), (808, 306655), (1010, 245324), (2020, 122662), (4040, 61331)]