13280421

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 23113728

約数和(自身を除く): 9833307

約数列:

[1, 3, 7, 11, 21, 33, 43, 49, 77, 129, 147, 191, 231, 301, 473, 539, 573, 903, 1337, 1419, 1617, 2101, 2107, 3311, 4011, 6303, 6321, 8213, 9359, 9933, 14707, 23177, 24639, 28077, 44121, 57491, 69531, 90343, 102949, 172473, 271029, 308847, 402437, 632401, 1207311, 1897203, 4426807, 13280421]

約数ペア:

[(1, 13280421), (3, 4426807), (7, 1897203), (11, 1207311), (21, 632401), (33, 402437), (43, 308847), (49, 271029), (77, 172473), (129, 102949), (147, 90343), (191, 69531), (231, 57491), (301, 44121), (473, 28077), (539, 24639), (573, 23177), (903, 14707), (1337, 9933), (1419, 9359), (1617, 8213), (2101, 6321), (2107, 6303), (3311, 4011)]