19911738

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:208

約数の個数: 96

約数和(自身を含む): 52005888

約数和(自身を除く): 32094150

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 47, 49, 66, 77, 94, 98, 131, 141, 147, 154, 231, 262, 282, 294, 329, 393, 462, 517, 539, 658, 786, 917, 987, 1034, 1078, 1441, 1551, 1617, 1834, 1974, 2303, 2751, 2882, 3102, 3234, 3619, 4323, 4606, 5502, 6157, 6419, 6909, 7238, 8646, 10087, 10857, 12314, 12838, 13818, 18471, 19257, 20174, 21714, 25333, 30261, 36942, 38514, 43099, 50666, 60522, 67727, 70609, 75999, 86198, 129297, 135454, 141218, 151998, 203181, 211827, 258594, 301693, 406362, 423654, 474089, 603386, 905079, 948178, 1422267, 1810158, 2844534, 3318623, 6637246, 9955869, 19911738]

約数ペア:

[(1, 19911738), (2, 9955869), (3, 6637246), (6, 3318623), (7, 2844534), (11, 1810158), (14, 1422267), (21, 948178), (22, 905079), (33, 603386), (42, 474089), (47, 423654), (49, 406362), (66, 301693), (77, 258594), (94, 211827), (98, 203181), (131, 151998), (141, 141218), (147, 135454), (154, 129297), (231, 86198), (262, 75999), (282, 70609), (294, 67727), (329, 60522), (393, 50666), (462, 43099), (517, 38514), (539, 36942), (658, 30261), (786, 25333), (917, 21714), (987, 20174), (1034, 19257), (1078, 18471), (1441, 13818), (1551, 12838), (1617, 12314), (1834, 10857), (1974, 10087), (2303, 8646), (2751, 7238), (2882, 6909), (3102, 6419), (3234, 6157), (3619, 5502), (4323, 4606)]