21704151

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{227}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 34583040

約数和(自身を除く): 12878889

約数列:

[1, 3, 7, 21, 29, 87, 157, 203, 227, 471, 609, 681, 1099, 1589, 3297, 4553, 4767, 6583, 13659, 19749, 31871, 35639, 46081, 95613, 106917, 138243, 249473, 748419, 1033531, 3100593, 7234717, 21704151]

約数ペア:

[(1, 21704151), (3, 7234717), (7, 3100593), (21, 1033531), (29, 748419), (87, 249473), (157, 138243), (203, 106917), (227, 95613), (471, 46081), (609, 35639), (681, 31871), (1099, 19749), (1589, 13659), (3297, 6583), (4553, 4767)]