21982725

素因数分解:

$3^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{1123}}^1$

素因数の和:1171

約数の個数: 48

約数和(自身を含む): 41812800

約数和(自身を除く): 19830075

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 87, 135, 145, 225, 261, 435, 675, 725, 783, 1123, 1305, 2175, 3369, 3915, 5615, 6525, 10107, 16845, 19575, 28075, 30321, 32567, 50535, 84225, 97701, 151605, 162835, 252675, 293103, 488505, 758025, 814175, 879309, 1465515, 2442525, 4396545, 7327575, 21982725]

約数ペア:

[(1, 21982725), (3, 7327575), (5, 4396545), (9, 2442525), (15, 1465515), (25, 879309), (27, 814175), (29, 758025), (45, 488505), (75, 293103), (87, 252675), (135, 162835), (145, 151605), (225, 97701), (261, 84225), (435, 50535), (675, 32567), (725, 30321), (783, 28075), (1123, 19575), (1305, 16845), (2175, 10107), (3369, 6525), (3915, 5615)]