7801240

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1931}}^1$

素因数の和:2043

約数の個数: 32

約数和(自身を含む): 17735760

約数和(自身を除く): 9934520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 1931, 2020, 3862, 4040, 7724, 9655, 15448, 19310, 38620, 77240, 195031, 390062, 780124, 975155, 1560248, 1950310, 3900620, 7801240]

約数ペア:

[(1, 7801240), (2, 3900620), (4, 1950310), (5, 1560248), (8, 975155), (10, 780124), (20, 390062), (40, 195031), (101, 77240), (202, 38620), (404, 19310), (505, 15448), (808, 9655), (1010, 7724), (1931, 4040), (2020, 3862)]