21880904

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{349}}^1\times {\mathrm{461}}^1$

素因数の和:833

約数の個数: 32

約数和(自身を含む): 43659000

約数和(自身を除く): 21778096

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 349, 461, 698, 922, 1396, 1844, 2792, 3688, 5933, 7837, 11866, 15674, 23732, 31348, 47464, 62696, 160889, 321778, 643556, 1287112, 2735113, 5470226, 10940452, 21880904]

約数ペア:

[(1, 21880904), (2, 10940452), (4, 5470226), (8, 2735113), (17, 1287112), (34, 643556), (68, 321778), (136, 160889), (349, 62696), (461, 47464), (698, 31348), (922, 23732), (1396, 15674), (1844, 11866), (2792, 7837), (3688, 5933)]