7888880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3181}}^1$

素因数の和:3225

約数の個数: 40

約数和(自身を含む): 18939264

約数和(自身を除く): 11050384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 3181, 6362, 12724, 15905, 25448, 31810, 50896, 63620, 98611, 127240, 197222, 254480, 394444, 493055, 788888, 986110, 1577776, 1972220, 3944440, 7888880]

約数ペア:

[(1, 7888880), (2, 3944440), (4, 1972220), (5, 1577776), (8, 986110), (10, 788888), (16, 493055), (20, 394444), (31, 254480), (40, 197222), (62, 127240), (80, 98611), (124, 63620), (155, 50896), (248, 31810), (310, 25448), (496, 15905), (620, 12724), (1240, 6362), (2480, 3181)]