20515673900

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{42379}}^1$

素因数の和:42543

約数の個数: 72

約数和(自身を含む): 45908728320

約数和(自身を除く): 25393054420

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 103, 188, 206, 235, 412, 470, 515, 940, 1030, 1175, 2060, 2350, 2575, 4700, 4841, 5150, 9682, 10300, 19364, 24205, 42379, 48410, 84758, 96820, 121025, 169516, 211895, 242050, 423790, 484100, 847580, 1059475, 1991813, 2118950, 3983626, 4237900, 4365037, 7967252, 8730074, 9959065, 17460148, 19918130, 21825185, 39836260, 43650370, 49795325, 87300740, 99590650, 109125925, 199181300, 205156739, 218251850, 410313478, 436503700, 820626956, 1025783695, 2051567390, 4103134780, 5128918475, 10257836950, 20515673900]

約数ペア:

[(1, 20515673900), (2, 10257836950), (4, 5128918475), (5, 4103134780), (10, 2051567390), (20, 1025783695), (25, 820626956), (47, 436503700), (50, 410313478), (94, 218251850), (100, 205156739), (103, 199181300), (188, 109125925), (206, 99590650), (235, 87300740), (412, 49795325), (470, 43650370), (515, 39836260), (940, 21825185), (1030, 19918130), (1175, 17460148), (2060, 9959065), (2350, 8730074), (2575, 7967252), (4700, 4365037), (4841, 4237900), (5150, 3983626), (9682, 2118950), (10300, 1991813), (19364, 1059475), (24205, 847580), (42379, 484100), (48410, 423790), (84758, 242050), (96820, 211895), (121025, 169516)]