21005244

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{4987}}^1$

素因数の和:5016

約数の個数: 60

約数和(自身を含む): 59147704

約数和(自身を除く): 38142460

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 108, 117, 156, 162, 234, 324, 351, 468, 702, 1053, 1404, 2106, 4212, 4987, 9974, 14961, 19948, 29922, 44883, 59844, 64831, 89766, 129662, 134649, 179532, 194493, 259324, 269298, 388986, 403947, 538596, 583479, 777972, 807894, 1166958, 1615788, 1750437, 2333916, 3500874, 5251311, 7001748, 10502622, 21005244]

約数ペア:

[(1, 21005244), (2, 10502622), (3, 7001748), (4, 5251311), (6, 3500874), (9, 2333916), (12, 1750437), (13, 1615788), (18, 1166958), (26, 807894), (27, 777972), (36, 583479), (39, 538596), (52, 403947), (54, 388986), (78, 269298), (81, 259324), (108, 194493), (117, 179532), (156, 134649), (162, 129662), (234, 89766), (324, 64831), (351, 59844), (468, 44883), (702, 29922), (1053, 19948), (1404, 14961), (2106, 9974), (4212, 4987)]