21087856

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10061}}^1$

素因数の和:10200

約数の個数: 20

約数和(自身を含む): 41173704

約数和(自身を除く): 20085848

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10061, 20122, 40244, 80488, 160976, 1317991, 2635982, 5271964, 10543928, 21087856]

約数ペア:

[(1, 21087856), (2, 10543928), (4, 5271964), (8, 2635982), (16, 1317991), (131, 160976), (262, 80488), (524, 40244), (1048, 20122), (2096, 10061)]