20961906

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:144

約数の個数: 96

約数和(自身を含む): 52399872

約数和(自身を除く): 31437966

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 41, 42, 47, 49, 74, 82, 94, 98, 111, 123, 141, 147, 222, 246, 259, 282, 287, 294, 329, 518, 574, 658, 777, 861, 987, 1517, 1554, 1722, 1739, 1813, 1927, 1974, 2009, 2303, 3034, 3478, 3626, 3854, 4018, 4551, 4606, 5217, 5439, 5781, 6027, 6909, 9102, 10434, 10619, 10878, 11562, 12054, 12173, 13489, 13818, 21238, 24346, 26978, 31857, 36519, 40467, 63714, 71299, 73038, 74333, 80934, 85211, 94423, 142598, 148666, 170422, 188846, 213897, 222999, 255633, 283269, 427794, 445998, 499093, 511266, 566538, 998186, 1497279, 2994558, 3493651, 6987302, 10480953, 20961906]

約数ペア:

[(1, 20961906), (2, 10480953), (3, 6987302), (6, 3493651), (7, 2994558), (14, 1497279), (21, 998186), (37, 566538), (41, 511266), (42, 499093), (47, 445998), (49, 427794), (74, 283269), (82, 255633), (94, 222999), (98, 213897), (111, 188846), (123, 170422), (141, 148666), (147, 142598), (222, 94423), (246, 85211), (259, 80934), (282, 74333), (287, 73038), (294, 71299), (329, 63714), (518, 40467), (574, 36519), (658, 31857), (777, 26978), (861, 24346), (987, 21238), (1517, 13818), (1554, 13489), (1722, 12173), (1739, 12054), (1813, 11562), (1927, 10878), (1974, 10619), (2009, 10434), (2303, 9102), (3034, 6909), (3478, 6027), (3626, 5781), (3854, 5439), (4018, 5217), (4551, 4606)]