21839937

素因数分解:

$3^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{1471}}^1$

素因数の和:1589

約数の個数: 24

約数和(自身を含む): 34232832

約数和(自身を除く): 12392895

約数列:

[1, 3, 7, 21, 49, 101, 147, 303, 707, 1471, 2121, 4413, 4949, 10297, 14847, 30891, 72079, 148571, 216237, 445713, 1039997, 3119991, 7279979, 21839937]

約数ペア:

[(1, 21839937), (3, 7279979), (7, 3119991), (21, 1039997), (49, 445713), (101, 216237), (147, 148571), (303, 72079), (707, 30891), (1471, 14847), (2121, 10297), (4413, 4949)]