204865115

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 319097856

約数和(自身を除く): 114232741

約数列:

[1, 5, 7, 13, 35, 37, 43, 65, 91, 185, 215, 259, 283, 301, 455, 481, 559, 1295, 1415, 1505, 1591, 1981, 2405, 2795, 3367, 3679, 3913, 7955, 9905, 10471, 11137, 12169, 16835, 18395, 19565, 20683, 25753, 52355, 55685, 60845, 73297, 85183, 103415, 128765, 136123, 144781, 158197, 366485, 425915, 450253, 680615, 723905, 790985, 952861, 1107379, 2251265, 3151771, 4764305, 5536895, 5853289, 15758855, 29266445, 40973023, 204865115]

約数ペア:

[(1, 204865115), (5, 40973023), (7, 29266445), (13, 15758855), (35, 5853289), (37, 5536895), (43, 4764305), (65, 3151771), (91, 2251265), (185, 1107379), (215, 952861), (259, 790985), (283, 723905), (301, 680615), (455, 450253), (481, 425915), (559, 366485), (1295, 158197), (1415, 144781), (1505, 136123), (1591, 128765), (1981, 103415), (2405, 85183), (2795, 73297), (3367, 60845), (3679, 55685), (3913, 52355), (7955, 25753), (9905, 20683), (10471, 19565), (11137, 18395), (12169, 16835)]