9875000

素因数分解:

$2^3\times 5^6\times {\mathrm{79}}^1$

素因数の和:115

約数の個数: 56

約数和(自身を含む): 23437200

約数和(自身を除く): 13562200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 125, 158, 200, 250, 316, 395, 500, 625, 632, 790, 1000, 1250, 1580, 1975, 2500, 3125, 3160, 3950, 5000, 6250, 7900, 9875, 12500, 15625, 15800, 19750, 25000, 31250, 39500, 49375, 62500, 79000, 98750, 125000, 197500, 246875, 395000, 493750, 987500, 1234375, 1975000, 2468750, 4937500, 9875000]

約数ペア:

[(1, 9875000), (2, 4937500), (4, 2468750), (5, 1975000), (8, 1234375), (10, 987500), (20, 493750), (25, 395000), (40, 246875), (50, 197500), (79, 125000), (100, 98750), (125, 79000), (158, 62500), (200, 49375), (250, 39500), (316, 31250), (395, 25000), (500, 19750), (625, 15800), (632, 15625), (790, 12500), (1000, 9875), (1250, 7900), (1580, 6250), (1975, 5000), (2500, 3950), (3125, 3160)]