18989901

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^2\times {\mathrm{149}}^1$

素因数の和:203

約数の個数: 54

約数和(自身を含む): 34123050

約数和(自身を除く): 15133149

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 149, 153, 289, 357, 441, 447, 833, 867, 1043, 1071, 1341, 2023, 2499, 2533, 2601, 3129, 6069, 7301, 7497, 7599, 9387, 14161, 17731, 18207, 21903, 22797, 42483, 43061, 53193, 65709, 124117, 127449, 129183, 159579, 301427, 372351, 387549, 904281, 1117053, 2109989, 2712843, 6329967, 18989901]

約数ペア:

[(1, 18989901), (3, 6329967), (7, 2712843), (9, 2109989), (17, 1117053), (21, 904281), (49, 387549), (51, 372351), (63, 301427), (119, 159579), (147, 129183), (149, 127449), (153, 124117), (289, 65709), (357, 53193), (441, 43061), (447, 42483), (833, 22797), (867, 21903), (1043, 18207), (1071, 17731), (1341, 14161), (2023, 9387), (2499, 7599), (2533, 7497), (2601, 7301), (3129, 6069)]