20109006475

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:832

約数の個数: 48

約数和(自身を含む): 25669116000

約数和(自身を除く): 5560109525

約数列:

[1, 5, 25, 67, 149, 197, 335, 409, 745, 985, 1675, 2045, 3725, 4925, 9983, 10225, 13199, 27403, 29353, 49915, 60941, 65995, 80573, 137015, 146765, 249575, 304705, 329975, 402865, 685075, 733825, 1523525, 1966651, 2014325, 4083047, 5398391, 9833255, 12005377, 20415235, 26991955, 49166275, 60026885, 102076175, 134959775, 300134425, 804360259, 4021801295, 20109006475]

約数ペア:

[(1, 20109006475), (5, 4021801295), (25, 804360259), (67, 300134425), (149, 134959775), (197, 102076175), (335, 60026885), (409, 49166275), (745, 26991955), (985, 20415235), (1675, 12005377), (2045, 9833255), (3725, 5398391), (4925, 4083047), (9983, 2014325), (10225, 1966651), (13199, 1523525), (27403, 733825), (29353, 685075), (49915, 402865), (60941, 329975), (65995, 304705), (80573, 249575), (137015, 146765)]