20318868

素因数分解:

$2^2\times 3^2\times {\mathrm{223}}^1\times {\mathrm{2531}}^1$

素因数の和:2764

約数の個数: 36

約数和(自身を含む): 51612288

約数和(自身を除く): 31293420

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 223, 446, 669, 892, 1338, 2007, 2531, 2676, 4014, 5062, 7593, 8028, 10124, 15186, 22779, 30372, 45558, 91116, 564413, 1128826, 1693239, 2257652, 3386478, 5079717, 6772956, 10159434, 20318868]

約数ペア:

[(1, 20318868), (2, 10159434), (3, 6772956), (4, 5079717), (6, 3386478), (9, 2257652), (12, 1693239), (18, 1128826), (36, 564413), (223, 91116), (446, 45558), (669, 30372), (892, 22779), (1338, 15186), (2007, 10124), (2531, 8028), (2676, 7593), (4014, 5062)]