217420325

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 296856000

約数和(自身を除く): 79435675

約数列:

[1, 5, 19, 25, 37, 89, 95, 139, 185, 445, 475, 695, 703, 925, 1691, 2225, 2641, 3293, 3475, 3515, 5143, 8455, 12371, 13205, 16465, 17575, 25715, 42275, 61855, 62567, 66025, 82325, 97717, 128575, 235049, 309275, 312835, 457727, 488585, 1175245, 1564175, 2288635, 2442925, 5876225, 8696813, 11443175, 43484065, 217420325]

約数ペア:

[(1, 217420325), (5, 43484065), (19, 11443175), (25, 8696813), (37, 5876225), (89, 2442925), (95, 2288635), (139, 1564175), (185, 1175245), (445, 488585), (475, 457727), (695, 312835), (703, 309275), (925, 235049), (1691, 128575), (2225, 97717), (2641, 82325), (3293, 66025), (3475, 62567), (3515, 61855), (5143, 42275), (8455, 25715), (12371, 17575), (13205, 16465)]