21438128

素因数分解:

$2^4\times {\mathrm{839}}^1\times {\mathrm{1597}}^1$

素因数の和:2444

約数の個数: 20

約数和(自身を含む): 41611920

約数和(自身を除く): 20173792

約数列:

[1, 2, 4, 8, 16, 839, 1597, 1678, 3194, 3356, 6388, 6712, 12776, 13424, 25552, 1339883, 2679766, 5359532, 10719064, 21438128]

約数ペア:

[(1, 21438128), (2, 10719064), (4, 5359532), (8, 2679766), (16, 1339883), (839, 25552), (1597, 13424), (1678, 12776), (3194, 6712), (3356, 6388)]