655124860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{81281}}^1$

素因数の和:81334

約数の個数: 48

約数和(自身を含む): 1529402112

約数和(自身を除く): 874277252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 81281, 162562, 325124, 406405, 812810, 1056653, 1625620, 2113306, 2519711, 4226612, 5039422, 5283265, 10078844, 10566530, 12598555, 21133060, 25197110, 32756243, 50394220, 65512486, 131024972, 163781215, 327562430, 655124860]

約数ペア:

[(1, 655124860), (2, 327562430), (4, 163781215), (5, 131024972), (10, 65512486), (13, 50394220), (20, 32756243), (26, 25197110), (31, 21133060), (52, 12598555), (62, 10566530), (65, 10078844), (124, 5283265), (130, 5039422), (155, 4226612), (260, 2519711), (310, 2113306), (403, 1625620), (620, 1056653), (806, 812810), (1612, 406405), (2015, 325124), (4030, 162562), (8060, 81281)]