77863960

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{499}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 181440000

約数和(自身を除く): 103576040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 83, 94, 166, 188, 235, 332, 376, 415, 470, 499, 664, 830, 940, 998, 1660, 1880, 1996, 2495, 3320, 3901, 3992, 4990, 7802, 9980, 15604, 19505, 19960, 23453, 31208, 39010, 41417, 46906, 78020, 82834, 93812, 117265, 156040, 165668, 187624, 207085, 234530, 331336, 414170, 469060, 828340, 938120, 1656680, 1946599, 3893198, 7786396, 9732995, 15572792, 19465990, 38931980, 77863960]

約数ペア:

[(1, 77863960), (2, 38931980), (4, 19465990), (5, 15572792), (8, 9732995), (10, 7786396), (20, 3893198), (40, 1946599), (47, 1656680), (83, 938120), (94, 828340), (166, 469060), (188, 414170), (235, 331336), (332, 234530), (376, 207085), (415, 187624), (470, 165668), (499, 156040), (664, 117265), (830, 93812), (940, 82834), (998, 78020), (1660, 46906), (1880, 41417), (1996, 39010), (2495, 31208), (3320, 23453), (3901, 19960), (3992, 19505), (4990, 15604), (7802, 9980)]