78016640

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9377}}^1$

素因数の和:9409

約数の個数: 64

約数和(自身を含む): 200876760

約数和(自身を除く): 122860120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 9377, 18754, 37508, 46885, 75016, 93770, 121901, 150032, 187540, 243802, 300064, 375080, 487604, 600128, 609505, 750160, 975208, 1200256, 1219010, 1500320, 1950416, 2438020, 3000640, 3900832, 4876040, 6001280, 7801664, 9752080, 15603328, 19504160, 39008320, 78016640]

約数ペア:

[(1, 78016640), (2, 39008320), (4, 19504160), (5, 15603328), (8, 9752080), (10, 7801664), (13, 6001280), (16, 4876040), (20, 3900832), (26, 3000640), (32, 2438020), (40, 1950416), (52, 1500320), (64, 1219010), (65, 1200256), (80, 975208), (104, 750160), (128, 609505), (130, 600128), (160, 487604), (208, 375080), (260, 300064), (320, 243802), (416, 187540), (520, 150032), (640, 121901), (832, 93770), (1040, 75016), (1664, 46885), (2080, 37508), (4160, 18754), (8320, 9377)]