20722149

素因数分解:

$3^4\times 7^2\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:276

約数の個数: 60

約数和(自身を含む): 37740384

約数和(自身を除く): 17018235

約数列:

[1, 3, 7, 9, 21, 23, 27, 49, 63, 69, 81, 147, 161, 189, 207, 227, 441, 483, 567, 621, 681, 1127, 1323, 1449, 1589, 1863, 2043, 3381, 3969, 4347, 4767, 5221, 6129, 10143, 11123, 13041, 14301, 15663, 18387, 30429, 33369, 36547, 42903, 46989, 91287, 100107, 109641, 128709, 140967, 255829, 300321, 328923, 422901, 767487, 900963, 986769, 2302461, 2960307, 6907383, 20722149]

約数ペア:

[(1, 20722149), (3, 6907383), (7, 2960307), (9, 2302461), (21, 986769), (23, 900963), (27, 767487), (49, 422901), (63, 328923), (69, 300321), (81, 255829), (147, 140967), (161, 128709), (189, 109641), (207, 100107), (227, 91287), (441, 46989), (483, 42903), (567, 36547), (621, 33369), (681, 30429), (1127, 18387), (1323, 15663), (1449, 14301), (1589, 13041), (1863, 11123), (2043, 10143), (3381, 6129), (3969, 5221), (4347, 4767)]