20127884

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 21784756

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 89, 164, 178, 197, 287, 356, 394, 574, 623, 788, 1148, 1246, 1379, 2492, 2758, 3649, 5516, 7298, 8077, 14596, 16154, 17533, 25543, 32308, 35066, 51086, 56539, 70132, 102172, 113078, 122731, 226156, 245462, 490924, 718853, 1437706, 2875412, 5031971, 10063942, 20127884]

約数ペア:

[(1, 20127884), (2, 10063942), (4, 5031971), (7, 2875412), (14, 1437706), (28, 718853), (41, 490924), (82, 245462), (89, 226156), (164, 122731), (178, 113078), (197, 102172), (287, 70132), (356, 56539), (394, 51086), (574, 35066), (623, 32308), (788, 25543), (1148, 17533), (1246, 16154), (1379, 14596), (2492, 8077), (2758, 7298), (3649, 5516)]