21921816

素因数分解:

$2^3\times 3^1\times 7^3\times {\mathrm{2663}}^1$

素因数の和:2693

約数の個数: 64

約数和(自身を含む): 63936000

約数和(自身を除く): 42014184

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 49, 56, 84, 98, 147, 168, 196, 294, 343, 392, 588, 686, 1029, 1176, 1372, 2058, 2663, 2744, 4116, 5326, 7989, 8232, 10652, 15978, 18641, 21304, 31956, 37282, 55923, 63912, 74564, 111846, 130487, 149128, 223692, 260974, 391461, 447384, 521948, 782922, 913409, 1043896, 1565844, 1826818, 2740227, 3131688, 3653636, 5480454, 7307272, 10960908, 21921816]

約数ペア:

[(1, 21921816), (2, 10960908), (3, 7307272), (4, 5480454), (6, 3653636), (7, 3131688), (8, 2740227), (12, 1826818), (14, 1565844), (21, 1043896), (24, 913409), (28, 782922), (42, 521948), (49, 447384), (56, 391461), (84, 260974), (98, 223692), (147, 149128), (168, 130487), (196, 111846), (294, 74564), (343, 63912), (392, 55923), (588, 37282), (686, 31956), (1029, 21304), (1176, 18641), (1372, 15978), (2058, 10652), (2663, 8232), (2744, 7989), (4116, 5326)]