20513600

素因数分解:

$2^6\times 5^2\times {\mathrm{12821}}^1$

素因数の和:12843

約数の個数: 42

約数和(自身を含む): 50480214

約数和(自身を除く): 29966614

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12821, 25642, 51284, 64105, 102568, 128210, 205136, 256420, 320525, 410272, 512840, 641050, 820544, 1025680, 1282100, 2051360, 2564200, 4102720, 5128400, 10256800, 20513600]

約数ペア:

[(1, 20513600), (2, 10256800), (4, 5128400), (5, 4102720), (8, 2564200), (10, 2051360), (16, 1282100), (20, 1025680), (25, 820544), (32, 641050), (40, 512840), (50, 410272), (64, 320525), (80, 256420), (100, 205136), (160, 128210), (200, 102568), (320, 64105), (400, 51284), (800, 25642), (1600, 12821)]