20164131880

素因数分解:

$2^3\times 5^1\times {\mathrm{797}}^1\times {\mathrm{632501}}^1$

素因数の和:633309

約数の個数: 32

約数和(自身を含む): 45426293640

約数和(自身を除く): 25262161760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 797, 1594, 3188, 3985, 6376, 7970, 15940, 31880, 632501, 1265002, 2530004, 3162505, 5060008, 6325010, 12650020, 25300040, 504103297, 1008206594, 2016413188, 2520516485, 4032826376, 5041032970, 10082065940, 20164131880]

約数ペア:

[(1, 20164131880), (2, 10082065940), (4, 5041032970), (5, 4032826376), (8, 2520516485), (10, 2016413188), (20, 1008206594), (40, 504103297), (797, 25300040), (1594, 12650020), (3188, 6325010), (3985, 5060008), (6376, 3162505), (7970, 2530004), (15940, 1265002), (31880, 632501)]