21282260

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{8123}}^1$

素因数の和:8263

約数の個数: 24

約数和(自身を含む): 45039456

約数和(自身を除く): 23757196

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 8123, 16246, 32492, 40615, 81230, 162460, 1064113, 2128226, 4256452, 5320565, 10641130, 21282260]

約数ペア:

[(1, 21282260), (2, 10641130), (4, 5320565), (5, 4256452), (10, 2128226), (20, 1064113), (131, 162460), (262, 81230), (524, 40615), (655, 32492), (1310, 16246), (2620, 8123)]