16818921

素因数分解:

$3^4\times 7^1\times {\mathrm{29663}}^1$

素因数の和:29682

約数の個数: 20

約数和(自身を含む): 28714752

約数和(自身を除く): 11895831

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 29663, 88989, 207641, 266967, 622923, 800901, 1868769, 2402703, 5606307, 16818921]

約数ペア:

[(1, 16818921), (3, 5606307), (7, 2402703), (9, 1868769), (21, 800901), (27, 622923), (63, 266967), (81, 207641), (189, 88989), (567, 29663)]