978481520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{394549}}^1$

素因数の和:394593

約数の個数: 40

約数和(自身を含む): 2348361600

約数和(自身を除く): 1369880080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 394549, 789098, 1578196, 1972745, 3156392, 3945490, 6312784, 7890980, 12231019, 15781960, 24462038, 31563920, 48924076, 61155095, 97848152, 122310190, 195696304, 244620380, 489240760, 978481520]

約数ペア:

[(1, 978481520), (2, 489240760), (4, 244620380), (5, 195696304), (8, 122310190), (10, 97848152), (16, 61155095), (20, 48924076), (31, 31563920), (40, 24462038), (62, 15781960), (80, 12231019), (124, 7890980), (155, 6312784), (248, 3945490), (310, 3156392), (496, 1972745), (620, 1578196), (1240, 789098), (2480, 394549)]