640310925

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{641}}^1\times {\mathrm{701}}^1$

素因数の和:1374

約数の個数: 48

約数和(自身を含む): 1117696320

約数和(自身を除く): 477385395

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 641, 701, 1425, 1923, 2103, 3205, 3505, 9615, 10515, 12179, 13319, 16025, 17525, 36537, 39957, 48075, 52575, 60895, 66595, 182685, 199785, 304475, 332975, 449341, 913425, 998925, 1348023, 2246705, 6740115, 8537479, 11233525, 25612437, 33700575, 42687395, 128062185, 213436975, 640310925]

約数ペア:

[(1, 640310925), (3, 213436975), (5, 128062185), (15, 42687395), (19, 33700575), (25, 25612437), (57, 11233525), (75, 8537479), (95, 6740115), (285, 2246705), (475, 1348023), (641, 998925), (701, 913425), (1425, 449341), (1923, 332975), (2103, 304475), (3205, 199785), (3505, 182685), (9615, 66595), (10515, 60895), (12179, 52575), (13319, 48075), (16025, 39957), (17525, 36537)]