21452500

素因数分解:

$2^2\times 5^4\times {\mathrm{8581}}^1$

素因数の和:8605

約数の個数: 30

約数和(自身を含む): 46917794

約数和(自身を除く): 25465294

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8581, 17162, 34324, 42905, 85810, 171620, 214525, 429050, 858100, 1072625, 2145250, 4290500, 5363125, 10726250, 21452500]

約数ペア:

[(1, 21452500), (2, 10726250), (4, 5363125), (5, 4290500), (10, 2145250), (20, 1072625), (25, 858100), (50, 429050), (100, 214525), (125, 171620), (250, 85810), (500, 42905), (625, 34324), (1250, 17162), (2500, 8581)]