19977435

素因数分解:

$3^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{461}}^1$

素因数の和:585

約数の個数: 40

約数和(自身を含む): 36224496

約数和(自身を除く): 16247061

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 107, 135, 321, 405, 461, 535, 963, 1383, 1605, 2305, 2889, 4149, 4815, 6915, 8667, 12447, 14445, 20745, 37341, 43335, 49327, 62235, 147981, 186705, 246635, 443943, 739905, 1331829, 2219715, 3995487, 6659145, 19977435]

約数ペア:

[(1, 19977435), (3, 6659145), (5, 3995487), (9, 2219715), (15, 1331829), (27, 739905), (45, 443943), (81, 246635), (107, 186705), (135, 147981), (321, 62235), (405, 49327), (461, 43335), (535, 37341), (963, 20745), (1383, 14445), (1605, 12447), (2305, 8667), (2889, 6915), (4149, 4815)]