20976400

素因数分解:

$2^4\times 5^2\times {\mathrm{229}}^2$

素因数の和:476

約数の個数: 45

約数和(自身を含む): 50616831

約数和(自身を除く): 29640431

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 229, 400, 458, 916, 1145, 1832, 2290, 3664, 4580, 5725, 9160, 11450, 18320, 22900, 45800, 52441, 91600, 104882, 209764, 262205, 419528, 524410, 839056, 1048820, 1311025, 2097640, 2622050, 4195280, 5244100, 10488200, 20976400]

約数ペア:

[(1, 20976400), (2, 10488200), (4, 5244100), (5, 4195280), (8, 2622050), (10, 2097640), (16, 1311025), (20, 1048820), (25, 839056), (40, 524410), (50, 419528), (80, 262205), (100, 209764), (200, 104882), (229, 91600), (400, 52441), (458, 45800), (916, 22900), (1145, 18320), (1832, 11450), (2290, 9160), (3664, 5725)]