21697240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28549}}^1$

素因数の和:28579

約数の個数: 32

約数和(自身を含む): 51390000

約数和(自身を除く): 29692760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28549, 57098, 114196, 142745, 228392, 285490, 542431, 570980, 1084862, 1141960, 2169724, 2712155, 4339448, 5424310, 10848620, 21697240]

約数ペア:

[(1, 21697240), (2, 10848620), (4, 5424310), (5, 4339448), (8, 2712155), (10, 2169724), (19, 1141960), (20, 1084862), (38, 570980), (40, 542431), (76, 285490), (95, 228392), (152, 142745), (190, 114196), (380, 57098), (760, 28549)]