18125000

素因数分解:

$2^3\times 5^7\times {\mathrm{29}}^1$

素因数の和:70

約数の個数: 64

約数和(自身を含む): 43945200

約数和(自身を除く): 25820200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 125, 145, 200, 232, 250, 290, 500, 580, 625, 725, 1000, 1160, 1250, 1450, 2500, 2900, 3125, 3625, 5000, 5800, 6250, 7250, 12500, 14500, 15625, 18125, 25000, 29000, 31250, 36250, 62500, 72500, 78125, 90625, 125000, 145000, 156250, 181250, 312500, 362500, 453125, 625000, 725000, 906250, 1812500, 2265625, 3625000, 4531250, 9062500, 18125000]

約数ペア:

[(1, 18125000), (2, 9062500), (4, 4531250), (5, 3625000), (8, 2265625), (10, 1812500), (20, 906250), (25, 725000), (29, 625000), (40, 453125), (50, 362500), (58, 312500), (100, 181250), (116, 156250), (125, 145000), (145, 125000), (200, 90625), (232, 78125), (250, 72500), (290, 62500), (500, 36250), (580, 31250), (625, 29000), (725, 25000), (1000, 18125), (1160, 15625), (1250, 14500), (1450, 12500), (2500, 7250), (2900, 6250), (3125, 5800), (3625, 5000)]