19899365

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 26956800

約数和(自身を除く): 7057435

約数列:

[1, 5, 19, 29, 31, 95, 145, 155, 233, 551, 589, 899, 1165, 2755, 2945, 4427, 4495, 6757, 7223, 17081, 22135, 33785, 36115, 85405, 128383, 137237, 209467, 641915, 686185, 1047335, 3979873, 19899365]

約数ペア:

[(1, 19899365), (5, 3979873), (19, 1047335), (29, 686185), (31, 641915), (95, 209467), (145, 137237), (155, 128383), (233, 85405), (551, 36115), (589, 33785), (899, 22135), (1165, 17081), (2755, 7223), (2945, 6757), (4427, 4495)]