21104902

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1901}}^1$

素因数の和:1984

約数の個数: 32

約数和(自身を含む): 39622464

約数和(自身を除く): 18517562

約数列:

[1, 2, 7, 13, 14, 26, 61, 91, 122, 182, 427, 793, 854, 1586, 1901, 3802, 5551, 11102, 13307, 24713, 26614, 49426, 115961, 172991, 231922, 345982, 811727, 1507493, 1623454, 3014986, 10552451, 21104902]

約数ペア:

[(1, 21104902), (2, 10552451), (7, 3014986), (13, 1623454), (14, 1507493), (26, 811727), (61, 345982), (91, 231922), (122, 172991), (182, 115961), (427, 49426), (793, 26614), (854, 24713), (1586, 13307), (1901, 11102), (3802, 5551)]