21244278

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{787}}^1$

素因数の和:1212

約数の個数: 32

約数和(自身を含む): 46523520

約数和(自身を除く): 25279242

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 409, 787, 818, 1227, 1574, 2361, 2454, 4499, 4722, 8657, 8998, 13497, 17314, 25971, 26994, 51942, 321883, 643766, 965649, 1931298, 3540713, 7081426, 10622139, 21244278]

約数ペア:

[(1, 21244278), (2, 10622139), (3, 7081426), (6, 3540713), (11, 1931298), (22, 965649), (33, 643766), (66, 321883), (409, 51942), (787, 26994), (818, 25971), (1227, 17314), (1574, 13497), (2361, 8998), (2454, 8657), (4499, 4722)]