20512500

素因数分解:

$2^2\times 3^1\times 5^5\times {\mathrm{547}}^1$

素因数の和:579

約数の個数: 72

約数和(自身を含む): 59933664

約数和(自身を除く): 39421164

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 125, 150, 250, 300, 375, 500, 547, 625, 750, 1094, 1250, 1500, 1641, 1875, 2188, 2500, 2735, 3125, 3282, 3750, 5470, 6250, 6564, 7500, 8205, 9375, 10940, 12500, 13675, 16410, 18750, 27350, 32820, 37500, 41025, 54700, 68375, 82050, 136750, 164100, 205125, 273500, 341875, 410250, 683750, 820500, 1025625, 1367500, 1709375, 2051250, 3418750, 4102500, 5128125, 6837500, 10256250, 20512500]

約数ペア:

[(1, 20512500), (2, 10256250), (3, 6837500), (4, 5128125), (5, 4102500), (6, 3418750), (10, 2051250), (12, 1709375), (15, 1367500), (20, 1025625), (25, 820500), (30, 683750), (50, 410250), (60, 341875), (75, 273500), (100, 205125), (125, 164100), (150, 136750), (250, 82050), (300, 68375), (375, 54700), (500, 41025), (547, 37500), (625, 32820), (750, 27350), (1094, 18750), (1250, 16410), (1500, 13675), (1641, 12500), (1875, 10940), (2188, 9375), (2500, 8205), (2735, 7500), (3125, 6564), (3282, 6250), (3750, 5470)]