20023605

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{1009}}^1$

素因数の和:1040

約数の個数: 60

約数和(自身を含む): 41795820

約数和(自身を除く): 21772215

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 405, 441, 567, 735, 945, 1009, 1323, 2205, 2835, 3027, 3969, 5045, 6615, 7063, 9081, 15135, 19845, 21189, 27243, 35315, 45405, 49441, 63567, 81729, 105945, 136215, 148323, 190701, 247205, 317835, 408645, 444969, 572103, 741615, 953505, 1334907, 2224845, 2860515, 4004721, 6674535, 20023605]

約数ペア:

[(1, 20023605), (3, 6674535), (5, 4004721), (7, 2860515), (9, 2224845), (15, 1334907), (21, 953505), (27, 741615), (35, 572103), (45, 444969), (49, 408645), (63, 317835), (81, 247205), (105, 190701), (135, 148323), (147, 136215), (189, 105945), (245, 81729), (315, 63567), (405, 49441), (441, 45405), (567, 35315), (735, 27243), (945, 21189), (1009, 19845), (1323, 15135), (2205, 9081), (2835, 7063), (3027, 6615), (3969, 5045)]