1640860900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{123373}}^1$

素因数の和:123413

約数の個数: 72

約数和(自身を含む): 4283545280

約数和(自身を除く): 2642684380

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 70, 76, 95, 100, 133, 140, 175, 190, 266, 350, 380, 475, 532, 665, 700, 950, 1330, 1900, 2660, 3325, 6650, 13300, 123373, 246746, 493492, 616865, 863611, 1233730, 1727222, 2344087, 2467460, 3084325, 3454444, 4318055, 4688174, 6168650, 8636110, 9376348, 11720435, 12337300, 16408609, 17272220, 21590275, 23440870, 32817218, 43180550, 46881740, 58602175, 65634436, 82043045, 86361100, 117204350, 164086090, 234408700, 328172180, 410215225, 820430450, 1640860900]

約数ペア:

[(1, 1640860900), (2, 820430450), (4, 410215225), (5, 328172180), (7, 234408700), (10, 164086090), (14, 117204350), (19, 86361100), (20, 82043045), (25, 65634436), (28, 58602175), (35, 46881740), (38, 43180550), (50, 32817218), (70, 23440870), (76, 21590275), (95, 17272220), (100, 16408609), (133, 12337300), (140, 11720435), (175, 9376348), (190, 8636110), (266, 6168650), (350, 4688174), (380, 4318055), (475, 3454444), (532, 3084325), (665, 2467460), (700, 2344087), (950, 1727222), (1330, 1233730), (1900, 863611), (2660, 616865), (3325, 493492), (6650, 246746), (13300, 123373)]