20129284

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{241}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 42824320

約数和(自身を除く): 22695036

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 157, 241, 266, 314, 482, 532, 628, 964, 1099, 1687, 2198, 2983, 3374, 4396, 4579, 5966, 6748, 9158, 11932, 18316, 20881, 32053, 37837, 41762, 64106, 75674, 83524, 128212, 151348, 264859, 529718, 718903, 1059436, 1437806, 2875612, 5032321, 10064642, 20129284]

約数ペア:

[(1, 20129284), (2, 10064642), (4, 5032321), (7, 2875612), (14, 1437806), (19, 1059436), (28, 718903), (38, 529718), (76, 264859), (133, 151348), (157, 128212), (241, 83524), (266, 75674), (314, 64106), (482, 41762), (532, 37837), (628, 32053), (964, 20881), (1099, 18316), (1687, 11932), (2198, 9158), (2983, 6748), (3374, 5966), (4396, 4579)]