656376640

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{521}}^1$

素因数の和:696

約数の個数: 112

約数和(自身を含む): 1629241344

約数和(自身を除く): 972864704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 127, 155, 160, 248, 254, 310, 320, 496, 508, 521, 620, 635, 992, 1016, 1042, 1240, 1270, 1984, 2032, 2084, 2480, 2540, 2605, 3937, 4064, 4168, 4960, 5080, 5210, 7874, 8128, 8336, 9920, 10160, 10420, 15748, 16151, 16672, 19685, 20320, 20840, 31496, 32302, 33344, 39370, 40640, 41680, 62992, 64604, 66167, 78740, 80755, 83360, 125984, 129208, 132334, 157480, 161510, 166720, 251968, 258416, 264668, 314960, 323020, 330835, 516832, 529336, 629920, 646040, 661670, 1033664, 1058672, 1259840, 1292080, 1323340, 2051177, 2117344, 2584160, 2646680, 4102354, 4234688, 5168320, 5293360, 8204708, 10255885, 10586720, 16409416, 20511770, 21173440, 32818832, 41023540, 65637664, 82047080, 131275328, 164094160, 328188320, 656376640]

約数ペア:

[(1, 656376640), (2, 328188320), (4, 164094160), (5, 131275328), (8, 82047080), (10, 65637664), (16, 41023540), (20, 32818832), (31, 21173440), (32, 20511770), (40, 16409416), (62, 10586720), (64, 10255885), (80, 8204708), (124, 5293360), (127, 5168320), (155, 4234688), (160, 4102354), (248, 2646680), (254, 2584160), (310, 2117344), (320, 2051177), (496, 1323340), (508, 1292080), (521, 1259840), (620, 1058672), (635, 1033664), (992, 661670), (1016, 646040), (1042, 629920), (1240, 529336), (1270, 516832), (1984, 330835), (2032, 323020), (2084, 314960), (2480, 264668), (2540, 258416), (2605, 251968), (3937, 166720), (4064, 161510), (4168, 157480), (4960, 132334), (5080, 129208), (5210, 125984), (7874, 83360), (8128, 80755), (8336, 78740), (9920, 66167), (10160, 64604), (10420, 62992), (15748, 41680), (16151, 40640), (16672, 39370), (19685, 33344), (20320, 32302), (20840, 31496)]