20941767

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1439}}^1$

素因数の和:1473

約数の個数: 48

約数和(自身を含む): 39398400

約数和(自身を除く): 18456633

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 99, 147, 189, 231, 297, 441, 539, 693, 1323, 1439, 1617, 2079, 4317, 4851, 10073, 12951, 14553, 15829, 30219, 38853, 47487, 70511, 90657, 110803, 142461, 211533, 271971, 332409, 427383, 634599, 775621, 997227, 1903797, 2326863, 2991681, 6980589, 20941767]

約数ペア:

[(1, 20941767), (3, 6980589), (7, 2991681), (9, 2326863), (11, 1903797), (21, 997227), (27, 775621), (33, 634599), (49, 427383), (63, 332409), (77, 271971), (99, 211533), (147, 142461), (189, 110803), (231, 90657), (297, 70511), (441, 47487), (539, 38853), (693, 30219), (1323, 15829), (1439, 14553), (1617, 12951), (2079, 10073), (4317, 4851)]