257416705

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 397393920

約数和(自身を除く): 139977215

約数列:

[1, 5, 7, 13, 35, 43, 59, 65, 91, 215, 223, 295, 301, 413, 455, 559, 767, 1115, 1505, 1561, 2065, 2537, 2795, 2899, 3835, 3913, 5369, 7805, 9589, 12685, 13157, 14495, 17759, 19565, 20293, 26845, 32981, 47945, 65785, 67123, 88795, 92099, 101465, 124657, 164905, 171041, 230867, 335615, 460495, 565751, 623285, 855205, 872599, 1154335, 1197287, 2828755, 3960257, 4362995, 5986435, 7354763, 19801285, 36773815, 51483341, 257416705]

約数ペア:

[(1, 257416705), (5, 51483341), (7, 36773815), (13, 19801285), (35, 7354763), (43, 5986435), (59, 4362995), (65, 3960257), (91, 2828755), (215, 1197287), (223, 1154335), (295, 872599), (301, 855205), (413, 623285), (455, 565751), (559, 460495), (767, 335615), (1115, 230867), (1505, 171041), (1561, 164905), (2065, 124657), (2537, 101465), (2795, 92099), (2899, 88795), (3835, 67123), (3913, 65785), (5369, 47945), (7805, 32981), (9589, 26845), (12685, 20293), (13157, 19565), (14495, 17759)]