1221399

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{887}}^1$

素因数の和:916

約数の個数: 20

約数和(自身を含む): 1934064

約数和(自身を除く): 712665

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 887, 1377, 2661, 7983, 15079, 23949, 45237, 71847, 135711, 407133, 1221399]

約数ペア:

[(1, 1221399), (3, 407133), (9, 135711), (17, 71847), (27, 45237), (51, 23949), (81, 15079), (153, 7983), (459, 2661), (887, 1377)]