21078448

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69337}}^1$

素因数の和:69364

約数の個数: 20

約数和(自身を含む): 42989560

約数和(自身を除く): 21911112

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69337, 138674, 277348, 554696, 1109392, 1317403, 2634806, 5269612, 10539224, 21078448]

約数ペア:

[(1, 21078448), (2, 10539224), (4, 5269612), (8, 2634806), (16, 1317403), (19, 1109392), (38, 554696), (76, 277348), (152, 138674), (304, 69337)]