19678905

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 35515584

約数和(自身を除く): 15836679

約数列:

[1, 3, 5, 9, 15, 45, 61, 67, 107, 183, 201, 305, 321, 335, 535, 549, 603, 915, 963, 1005, 1605, 2745, 3015, 4087, 4815, 6527, 7169, 12261, 19581, 20435, 21507, 32635, 35845, 36783, 58743, 61305, 64521, 97905, 107535, 183915, 293715, 322605, 437309, 1311927, 2186545, 3935781, 6559635, 19678905]

約数ペア:

[(1, 19678905), (3, 6559635), (5, 3935781), (9, 2186545), (15, 1311927), (45, 437309), (61, 322605), (67, 293715), (107, 183915), (183, 107535), (201, 97905), (305, 64521), (321, 61305), (335, 58743), (535, 36783), (549, 35845), (603, 32635), (915, 21507), (963, 20435), (1005, 19581), (1605, 12261), (2745, 7169), (3015, 6527), (4087, 4815)]