64808500

素因数分解:

$2^2\times 5^3\times {\mathrm{227}}^1\times {\mathrm{571}}^1$

素因数の和:817

約数の個数: 48

約数和(自身を含む): 142414272

約数和(自身を除く): 77605772

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 227, 250, 454, 500, 571, 908, 1135, 1142, 2270, 2284, 2855, 4540, 5675, 5710, 11350, 11420, 14275, 22700, 28375, 28550, 56750, 57100, 71375, 113500, 129617, 142750, 259234, 285500, 518468, 648085, 1296170, 2592340, 3240425, 6480850, 12961700, 16202125, 32404250, 64808500]

約数ペア:

[(1, 64808500), (2, 32404250), (4, 16202125), (5, 12961700), (10, 6480850), (20, 3240425), (25, 2592340), (50, 1296170), (100, 648085), (125, 518468), (227, 285500), (250, 259234), (454, 142750), (500, 129617), (571, 113500), (908, 71375), (1135, 57100), (1142, 56750), (2270, 28550), (2284, 28375), (2855, 22700), (4540, 14275), (5675, 11420), (5710, 11350)]