20495600

素因数分解:

$2^4\times 5^2\times {\mathrm{51239}}^1$

素因数の和:51257

約数の個数: 30

約数和(自身を含む): 49241640

約数和(自身を除く): 28746040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51239, 102478, 204956, 256195, 409912, 512390, 819824, 1024780, 1280975, 2049560, 2561950, 4099120, 5123900, 10247800, 20495600]

約数ペア:

[(1, 20495600), (2, 10247800), (4, 5123900), (5, 4099120), (8, 2561950), (10, 2049560), (16, 1280975), (20, 1024780), (25, 819824), (40, 512390), (50, 409912), (80, 256195), (100, 204956), (200, 102478), (400, 51239)]