19468750

素因数分解:

$2^1\times 5^6\times 7^1\times {\mathrm{89}}^1$

素因数の和:128

約数の個数: 56

約数和(自身を含む): 42186960

約数和(自身を除く): 22718210

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 89, 125, 175, 178, 250, 350, 445, 623, 625, 875, 890, 1246, 1250, 1750, 2225, 3115, 3125, 4375, 4450, 6230, 6250, 8750, 11125, 15575, 15625, 21875, 22250, 31150, 31250, 43750, 55625, 77875, 109375, 111250, 155750, 218750, 278125, 389375, 556250, 778750, 1390625, 1946875, 2781250, 3893750, 9734375, 19468750]

約数ペア:

[(1, 19468750), (2, 9734375), (5, 3893750), (7, 2781250), (10, 1946875), (14, 1390625), (25, 778750), (35, 556250), (50, 389375), (70, 278125), (89, 218750), (125, 155750), (175, 111250), (178, 109375), (250, 77875), (350, 55625), (445, 43750), (623, 31250), (625, 31150), (875, 22250), (890, 21875), (1246, 15625), (1250, 15575), (1750, 11125), (2225, 8750), (3115, 6250), (3125, 6230), (4375, 4450)]