21081852

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{383}}^1$

素因数の和:543

約数の個数: 72

約数和(自身を含む): 58705920

約数和(自身を除く): 37624068

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 139, 198, 278, 383, 396, 417, 556, 766, 834, 1149, 1251, 1529, 1532, 1668, 2298, 2502, 3058, 3447, 4213, 4587, 4596, 5004, 6116, 6894, 8426, 9174, 12639, 13761, 13788, 16852, 18348, 25278, 27522, 37917, 50556, 53237, 55044, 75834, 106474, 151668, 159711, 212948, 319422, 479133, 585607, 638844, 958266, 1171214, 1756821, 1916532, 2342428, 3513642, 5270463, 7027284, 10540926, 21081852]

約数ペア:

[(1, 21081852), (2, 10540926), (3, 7027284), (4, 5270463), (6, 3513642), (9, 2342428), (11, 1916532), (12, 1756821), (18, 1171214), (22, 958266), (33, 638844), (36, 585607), (44, 479133), (66, 319422), (99, 212948), (132, 159711), (139, 151668), (198, 106474), (278, 75834), (383, 55044), (396, 53237), (417, 50556), (556, 37917), (766, 27522), (834, 25278), (1149, 18348), (1251, 16852), (1529, 13788), (1532, 13761), (1668, 12639), (2298, 9174), (2502, 8426), (3058, 6894), (3447, 6116), (4213, 5004), (4587, 4596)]