21677721

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{9421}}^1$

素因数の和:9496

約数の個数: 16

約数和(自身を含む): 31657920

約数和(自身を除く): 9980199

約数列:

[1, 3, 13, 39, 59, 177, 767, 2301, 9421, 28263, 122473, 367419, 555839, 1667517, 7225907, 21677721]

約数ペア:

[(1, 21677721), (3, 7225907), (13, 1667517), (39, 555839), (59, 367419), (177, 122473), (767, 28263), (2301, 9421)]