20784885

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{1223}}^1$

素因数の和:1345

約数の個数: 32

約数和(自身を含む): 36661248

約数和(自身を除く): 15876363

約数列:

[1, 3, 5, 11, 15, 33, 55, 103, 165, 309, 515, 1133, 1223, 1545, 3399, 3669, 5665, 6115, 13453, 16995, 18345, 40359, 67265, 125969, 201795, 377907, 629845, 1385659, 1889535, 4156977, 6928295, 20784885]

約数ペア:

[(1, 20784885), (3, 6928295), (5, 4156977), (11, 1889535), (15, 1385659), (33, 629845), (55, 377907), (103, 201795), (165, 125969), (309, 67265), (515, 40359), (1133, 18345), (1223, 16995), (1545, 13453), (3399, 6115), (3669, 5665)]