21393575

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2843}}^1$

素因数の和:2903

約数の個数: 24

約数和(自身を含む): 31033728

約数和(自身を除く): 9640153

約数列:

[1, 5, 7, 25, 35, 43, 175, 215, 301, 1075, 1505, 2843, 7525, 14215, 19901, 71075, 99505, 122249, 497525, 611245, 855743, 3056225, 4278715, 21393575]

約数ペア:

[(1, 21393575), (5, 4278715), (7, 3056225), (25, 855743), (35, 611245), (43, 497525), (175, 122249), (215, 99505), (301, 71075), (1075, 19901), (1505, 14215), (2843, 7525)]