21830823

素因数分解:

$3^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{569}}^1$

素因数の和:621

約数の個数: 48

約数和(自身を含む): 38988000

約数和(自身を除く): 17157177

約数列:

[1, 3, 7, 9, 21, 27, 29, 49, 63, 87, 147, 189, 203, 261, 441, 569, 609, 783, 1323, 1421, 1707, 1827, 3983, 4263, 5121, 5481, 11949, 12789, 15363, 16501, 27881, 35847, 38367, 49503, 83643, 107541, 115507, 148509, 250929, 346521, 445527, 752787, 808549, 1039563, 2425647, 3118689, 7276941, 21830823]

約数ペア:

[(1, 21830823), (3, 7276941), (7, 3118689), (9, 2425647), (21, 1039563), (27, 808549), (29, 752787), (49, 445527), (63, 346521), (87, 250929), (147, 148509), (189, 115507), (203, 107541), (261, 83643), (441, 49503), (569, 38367), (609, 35847), (783, 27881), (1323, 16501), (1421, 15363), (1707, 12789), (1827, 11949), (3983, 5481), (4263, 5121)]