16590987

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1009}}^1$

素因数の和:1057

約数の個数: 40

約数和(自身を含む): 29330400

約数和(自身を除く): 12739413

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1009, 1827, 2349, 3027, 5481, 7063, 9081, 16443, 21189, 27243, 29261, 63567, 81729, 87783, 190701, 204827, 263349, 572103, 614481, 790047, 1843443, 2370141, 5530329, 16590987]

約数ペア:

[(1, 16590987), (3, 5530329), (7, 2370141), (9, 1843443), (21, 790047), (27, 614481), (29, 572103), (63, 263349), (81, 204827), (87, 190701), (189, 87783), (203, 81729), (261, 63567), (567, 29261), (609, 27243), (783, 21189), (1009, 16443), (1827, 9081), (2349, 7063), (3027, 5481)]