21789425

素因数分解:

$5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1399}}^1$

素因数の和:1505

約数の個数: 24

約数和(自身を含む): 31248000

約数和(自身を除く): 9458575

約数列:

[1, 5, 7, 25, 35, 89, 175, 445, 623, 1399, 2225, 3115, 6995, 9793, 15575, 34975, 48965, 124511, 244825, 622555, 871577, 3112775, 4357885, 21789425]

約数ペア:

[(1, 21789425), (5, 4357885), (7, 3112775), (25, 871577), (35, 622555), (89, 244825), (175, 124511), (445, 48965), (623, 34975), (1399, 15575), (2225, 9793), (3115, 6995)]