12081880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 28576800

約数和(自身を除く): 16494920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 53, 82, 106, 139, 164, 205, 212, 265, 278, 328, 410, 424, 530, 556, 695, 820, 1060, 1112, 1390, 1640, 2120, 2173, 2780, 4346, 5560, 5699, 7367, 8692, 10865, 11398, 14734, 17384, 21730, 22796, 28495, 29468, 36835, 43460, 45592, 56990, 58936, 73670, 86920, 113980, 147340, 227960, 294680, 302047, 604094, 1208188, 1510235, 2416376, 3020470, 6040940, 12081880]

約数ペア:

[(1, 12081880), (2, 6040940), (4, 3020470), (5, 2416376), (8, 1510235), (10, 1208188), (20, 604094), (40, 302047), (41, 294680), (53, 227960), (82, 147340), (106, 113980), (139, 86920), (164, 73670), (205, 58936), (212, 56990), (265, 45592), (278, 43460), (328, 36835), (410, 29468), (424, 28495), (530, 22796), (556, 21730), (695, 17384), (820, 14734), (1060, 11398), (1112, 10865), (1390, 8692), (1640, 7367), (2120, 5699), (2173, 5560), (2780, 4346)]