20521704

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:199

約数の個数: 128

約数和(自身を含む): 63037440

約数和(自身を除く): 42515736

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 23, 24, 28, 42, 46, 47, 56, 69, 84, 92, 94, 113, 138, 141, 161, 168, 184, 188, 226, 276, 282, 322, 329, 339, 376, 452, 483, 552, 564, 644, 658, 678, 791, 904, 966, 987, 1081, 1128, 1288, 1316, 1356, 1582, 1932, 1974, 2162, 2373, 2599, 2632, 2712, 3164, 3243, 3864, 3948, 4324, 4746, 5198, 5311, 6328, 6486, 7567, 7797, 7896, 8648, 9492, 10396, 10622, 12972, 15134, 15594, 15933, 18193, 18984, 20792, 21244, 22701, 25944, 30268, 31188, 31866, 36386, 37177, 42488, 45402, 54579, 60536, 62376, 63732, 72772, 74354, 90804, 109158, 111531, 122153, 127464, 145544, 148708, 181608, 218316, 223062, 244306, 297416, 366459, 436632, 446124, 488612, 732918, 855071, 892248, 977224, 1465836, 1710142, 2565213, 2931672, 3420284, 5130426, 6840568, 10260852, 20521704]

約数ペア:

[(1, 20521704), (2, 10260852), (3, 6840568), (4, 5130426), (6, 3420284), (7, 2931672), (8, 2565213), (12, 1710142), (14, 1465836), (21, 977224), (23, 892248), (24, 855071), (28, 732918), (42, 488612), (46, 446124), (47, 436632), (56, 366459), (69, 297416), (84, 244306), (92, 223062), (94, 218316), (113, 181608), (138, 148708), (141, 145544), (161, 127464), (168, 122153), (184, 111531), (188, 109158), (226, 90804), (276, 74354), (282, 72772), (322, 63732), (329, 62376), (339, 60536), (376, 54579), (452, 45402), (483, 42488), (552, 37177), (564, 36386), (644, 31866), (658, 31188), (678, 30268), (791, 25944), (904, 22701), (966, 21244), (987, 20792), (1081, 18984), (1128, 18193), (1288, 15933), (1316, 15594), (1356, 15134), (1582, 12972), (1932, 10622), (1974, 10396), (2162, 9492), (2373, 8648), (2599, 7896), (2632, 7797), (2712, 7567), (3164, 6486), (3243, 6328), (3864, 5311), (3948, 5198), (4324, 4746)]