389645980

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{2083}}^1$

素因数の和:2338

約数の個数: 48

約数和(自身を含む): 840268800

約数和(自身を除く): 450622820

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 199, 235, 398, 470, 796, 940, 995, 1990, 2083, 3980, 4166, 8332, 9353, 10415, 18706, 20830, 37412, 41660, 46765, 93530, 97901, 187060, 195802, 391604, 414517, 489505, 829034, 979010, 1658068, 1958020, 2072585, 4145170, 8290340, 19482299, 38964598, 77929196, 97411495, 194822990, 389645980]

約数ペア:

[(1, 389645980), (2, 194822990), (4, 97411495), (5, 77929196), (10, 38964598), (20, 19482299), (47, 8290340), (94, 4145170), (188, 2072585), (199, 1958020), (235, 1658068), (398, 979010), (470, 829034), (796, 489505), (940, 414517), (995, 391604), (1990, 195802), (2083, 187060), (3980, 97901), (4166, 93530), (8332, 46765), (9353, 41660), (10415, 37412), (18706, 20830)]