21005374

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{421}}^1$

素因数の和:556

約数の個数: 32

約数和(自身を含む): 36156960

約数和(自身を除く): 15151586

約数列:

[1, 2, 13, 19, 26, 38, 101, 202, 247, 421, 494, 842, 1313, 1919, 2626, 3838, 5473, 7999, 10946, 15998, 24947, 42521, 49894, 85042, 103987, 207974, 552773, 807899, 1105546, 1615798, 10502687, 21005374]

約数ペア:

[(1, 21005374), (2, 10502687), (13, 1615798), (19, 1105546), (26, 807899), (38, 552773), (101, 207974), (202, 103987), (247, 85042), (421, 49894), (494, 42521), (842, 24947), (1313, 15998), (1919, 10946), (2626, 7999), (3838, 5473)]