21211812

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{229}}^1$

素因数の和:353

約数の個数: 72

約数和(自身を含む): 56259840

約数和(自身を除く): 35048028

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 83, 93, 124, 166, 186, 229, 249, 279, 332, 372, 458, 498, 558, 687, 747, 916, 996, 1116, 1374, 1494, 2061, 2573, 2748, 2988, 4122, 5146, 7099, 7719, 8244, 10292, 14198, 15438, 19007, 21297, 23157, 28396, 30876, 38014, 42594, 46314, 57021, 63891, 76028, 85188, 92628, 114042, 127782, 171063, 228084, 255564, 342126, 589217, 684252, 1178434, 1767651, 2356868, 3535302, 5302953, 7070604, 10605906, 21211812]

約数ペア:

[(1, 21211812), (2, 10605906), (3, 7070604), (4, 5302953), (6, 3535302), (9, 2356868), (12, 1767651), (18, 1178434), (31, 684252), (36, 589217), (62, 342126), (83, 255564), (93, 228084), (124, 171063), (166, 127782), (186, 114042), (229, 92628), (249, 85188), (279, 76028), (332, 63891), (372, 57021), (458, 46314), (498, 42594), (558, 38014), (687, 30876), (747, 28396), (916, 23157), (996, 21297), (1116, 19007), (1374, 15438), (1494, 14198), (2061, 10292), (2573, 8244), (2748, 7719), (2988, 7099), (4122, 5146)]