21779504

素因数分解:

$2^4\times {\mathrm{683}}^1\times {\mathrm{1993}}^1$

素因数の和:2684

約数の個数: 20

約数和(自身を含む): 42280776

約数和(自身を除く): 20501272

約数列:

[1, 2, 4, 8, 16, 683, 1366, 1993, 2732, 3986, 5464, 7972, 10928, 15944, 31888, 1361219, 2722438, 5444876, 10889752, 21779504]

約数ペア:

[(1, 21779504), (2, 10889752), (4, 5444876), (8, 2722438), (16, 1361219), (683, 31888), (1366, 15944), (1993, 10928), (2732, 7972), (3986, 5464)]