18514209

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 30697920

約数和(自身を除く): 12183711

約数列:

[1, 3, 7, 21, 29, 43, 49, 87, 101, 129, 147, 203, 301, 303, 609, 707, 903, 1247, 1421, 2107, 2121, 2929, 3741, 4263, 4343, 4949, 6321, 8729, 8787, 13029, 14847, 20503, 26187, 30401, 61103, 61509, 91203, 125947, 143521, 183309, 212807, 377841, 430563, 638421, 881629, 2644887, 6171403, 18514209]

約数ペア:

[(1, 18514209), (3, 6171403), (7, 2644887), (21, 881629), (29, 638421), (43, 430563), (49, 377841), (87, 212807), (101, 183309), (129, 143521), (147, 125947), (203, 91203), (301, 61509), (303, 61103), (609, 30401), (707, 26187), (903, 20503), (1247, 14847), (1421, 13029), (2107, 8787), (2121, 8729), (2929, 6321), (3741, 4949), (4263, 4343)]