21963487

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12703}}^1$

素因数の和:12742

約数の個数: 16

約数和(自身を含む): 28456960

約数和(自身を除く): 6493473

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12703, 88921, 165139, 241357, 1155973, 1689499, 3137641, 21963487]

約数ペア:

[(1, 21963487), (7, 3137641), (13, 1689499), (19, 1155973), (91, 241357), (133, 165139), (247, 88921), (1729, 12703)]