81021245

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{1973}}^1$

素因数の和:2212

約数の個数: 16

約数和(自身を含む): 100058112

約数和(自身を除く): 19036867

約数列:

[1, 5, 43, 191, 215, 955, 1973, 8213, 9865, 41065, 84839, 376843, 424195, 1884215, 16204249, 81021245]

約数ペア:

[(1, 81021245), (5, 16204249), (43, 1884215), (191, 424195), (215, 376843), (955, 84839), (1973, 41065), (8213, 9865)]