20213996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{1181}}^1$

素因数の和:1585

約数の個数: 24

約数和(自身を含む): 38722320

約数和(自身を除く): 18508324

約数列:

[1, 2, 4, 11, 22, 44, 389, 778, 1181, 1556, 2362, 4279, 4724, 8558, 12991, 17116, 25982, 51964, 459409, 918818, 1837636, 5053499, 10106998, 20213996]

約数ペア:

[(1, 20213996), (2, 10106998), (4, 5053499), (11, 1837636), (22, 918818), (44, 459409), (389, 51964), (778, 25982), (1181, 17116), (1556, 12991), (2362, 8558), (4279, 4724)]