21378252

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{829}}^1$

素因数の和:1150

約数の個数: 48

約数和(自身を含む): 57263360

約数和(自身を除く): 35885108

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 307, 614, 829, 921, 1228, 1658, 1842, 2149, 2487, 3316, 3684, 4298, 4974, 5803, 6447, 8596, 9948, 11606, 12894, 17409, 23212, 25788, 34818, 69636, 254503, 509006, 763509, 1018012, 1527018, 1781521, 3054036, 3563042, 5344563, 7126084, 10689126, 21378252]

約数ペア:

[(1, 21378252), (2, 10689126), (3, 7126084), (4, 5344563), (6, 3563042), (7, 3054036), (12, 1781521), (14, 1527018), (21, 1018012), (28, 763509), (42, 509006), (84, 254503), (307, 69636), (614, 34818), (829, 25788), (921, 23212), (1228, 17409), (1658, 12894), (1842, 11606), (2149, 9948), (2487, 8596), (3316, 6447), (3684, 5803), (4298, 4974)]