21064505

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{54713}}^1$

素因数の和:54736

約数の個数: 16

約数和(自身を含む): 31515264

約数和(自身を除く): 10450759

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 54713, 273565, 382991, 601843, 1914955, 3009215, 4212901, 21064505]

約数ペア:

[(1, 21064505), (5, 4212901), (7, 3009215), (11, 1914955), (35, 601843), (55, 382991), (77, 273565), (385, 54713)]