78578000

素因数分解:

$2^4\times 5^3\times {\mathrm{101}}^1\times {\mathrm{389}}^1$

素因数の和:513

約数の個数: 80

約数和(自身を含む): 192376080

約数和(自身を除く): 113798080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 125, 200, 202, 250, 389, 400, 404, 500, 505, 778, 808, 1000, 1010, 1556, 1616, 1945, 2000, 2020, 2525, 3112, 3890, 4040, 5050, 6224, 7780, 8080, 9725, 10100, 12625, 15560, 19450, 20200, 25250, 31120, 38900, 39289, 40400, 48625, 50500, 77800, 78578, 97250, 101000, 155600, 157156, 194500, 196445, 202000, 314312, 389000, 392890, 628624, 778000, 785780, 982225, 1571560, 1964450, 3143120, 3928900, 4911125, 7857800, 9822250, 15715600, 19644500, 39289000, 78578000]

約数ペア:

[(1, 78578000), (2, 39289000), (4, 19644500), (5, 15715600), (8, 9822250), (10, 7857800), (16, 4911125), (20, 3928900), (25, 3143120), (40, 1964450), (50, 1571560), (80, 982225), (100, 785780), (101, 778000), (125, 628624), (200, 392890), (202, 389000), (250, 314312), (389, 202000), (400, 196445), (404, 194500), (500, 157156), (505, 155600), (778, 101000), (808, 97250), (1000, 78578), (1010, 77800), (1556, 50500), (1616, 48625), (1945, 40400), (2000, 39289), (2020, 38900), (2525, 31120), (3112, 25250), (3890, 20200), (4040, 19450), (5050, 15560), (6224, 12625), (7780, 10100), (8080, 9725)]