19820500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{809}}^1$

素因数の和:842

約数の個数: 72

約数和(自身を含む): 50417640

約数和(自身を除く): 30597140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 125, 140, 175, 196, 245, 250, 350, 490, 500, 700, 809, 875, 980, 1225, 1618, 1750, 2450, 3236, 3500, 4045, 4900, 5663, 6125, 8090, 11326, 12250, 16180, 20225, 22652, 24500, 28315, 39641, 40450, 56630, 79282, 80900, 101125, 113260, 141575, 158564, 198205, 202250, 283150, 396410, 404500, 566300, 707875, 792820, 991025, 1415750, 1982050, 2831500, 3964100, 4955125, 9910250, 19820500]

約数ペア:

[(1, 19820500), (2, 9910250), (4, 4955125), (5, 3964100), (7, 2831500), (10, 1982050), (14, 1415750), (20, 991025), (25, 792820), (28, 707875), (35, 566300), (49, 404500), (50, 396410), (70, 283150), (98, 202250), (100, 198205), (125, 158564), (140, 141575), (175, 113260), (196, 101125), (245, 80900), (250, 79282), (350, 56630), (490, 40450), (500, 39641), (700, 28315), (809, 24500), (875, 22652), (980, 20225), (1225, 16180), (1618, 12250), (1750, 11326), (2450, 8090), (3236, 6125), (3500, 5663), (4045, 4900)]