21478884

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{1061}}^1$

素因数の和:1316

約数の個数: 48

約数和(自身を含む): 57568896

約数和(自身を除く): 36090012

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 241, 482, 723, 964, 1061, 1446, 1687, 2122, 2892, 3183, 3374, 4244, 5061, 6366, 6748, 7427, 10122, 12732, 14854, 20244, 22281, 29708, 44562, 89124, 255701, 511402, 767103, 1022804, 1534206, 1789907, 3068412, 3579814, 5369721, 7159628, 10739442, 21478884]

約数ペア:

[(1, 21478884), (2, 10739442), (3, 7159628), (4, 5369721), (6, 3579814), (7, 3068412), (12, 1789907), (14, 1534206), (21, 1022804), (28, 767103), (42, 511402), (84, 255701), (241, 89124), (482, 44562), (723, 29708), (964, 22281), (1061, 20244), (1446, 14854), (1687, 12732), (2122, 10122), (2892, 7427), (3183, 6748), (3374, 6366), (4244, 5061)]