21648291

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{13049}}^1$

素因数の和:13138

約数の個数: 16

約数和(自身を含む): 33408000

約数和(自身を除く): 11759709

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 13049, 39147, 91343, 274029, 1030871, 3092613, 7216097, 21648291]

約数ペア:

[(1, 21648291), (3, 7216097), (7, 3092613), (21, 1030871), (79, 274029), (237, 91343), (553, 39147), (1659, 13049)]