38931980

素因数分解:

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

素因数の和:638

約数の個数: 48

約数和(自身を含む): 84672000

約数和(自身を除く): 45740020

約数列:

[1, 2, 4, 5, 10, 20, 47, 83, 94, 166, 188, 235, 332, 415, 470, 499, 830, 940, 998, 1660, 1996, 2495, 3901, 4990, 7802, 9980, 15604, 19505, 23453, 39010, 41417, 46906, 78020, 82834, 93812, 117265, 165668, 207085, 234530, 414170, 469060, 828340, 1946599, 3893198, 7786396, 9732995, 19465990, 38931980]

約数ペア:

[(1, 38931980), (2, 19465990), (4, 9732995), (5, 7786396), (10, 3893198), (20, 1946599), (47, 828340), (83, 469060), (94, 414170), (166, 234530), (188, 207085), (235, 165668), (332, 117265), (415, 93812), (470, 82834), (499, 78020), (830, 46906), (940, 41417), (998, 39010), (1660, 23453), (1996, 19505), (2495, 15604), (3901, 9980), (4990, 7802)]