20309975

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2699}}^1$

素因数の和:2759

約数の個数: 24

約数和(自身を含む): 29462400

約数和(自身を除く): 9152425

約数列:

[1, 5, 7, 25, 35, 43, 175, 215, 301, 1075, 1505, 2699, 7525, 13495, 18893, 67475, 94465, 116057, 472325, 580285, 812399, 2901425, 4061995, 20309975]

約数ペア:

[(1, 20309975), (5, 4061995), (7, 2901425), (25, 812399), (35, 580285), (43, 472325), (175, 116057), (215, 94465), (301, 67475), (1075, 18893), (1505, 13495), (2699, 7525)]