20218968

素因数分解:

$2^3\times 3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{521}}^1$

素因数の和:558

約数の個数: 144

約数和(自身を含む): 69624360

約数和(自身を除く): 49405392

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 18, 21, 22, 24, 28, 33, 36, 42, 44, 49, 56, 63, 66, 72, 77, 84, 88, 98, 99, 126, 132, 147, 154, 168, 196, 198, 231, 252, 264, 294, 308, 392, 396, 441, 462, 504, 521, 539, 588, 616, 693, 792, 882, 924, 1042, 1078, 1176, 1386, 1563, 1617, 1764, 1848, 2084, 2156, 2772, 3126, 3234, 3528, 3647, 4168, 4312, 4689, 4851, 5544, 5731, 6252, 6468, 7294, 9378, 9702, 10941, 11462, 12504, 12936, 14588, 17193, 18756, 19404, 21882, 22924, 25529, 29176, 32823, 34386, 37512, 38808, 40117, 43764, 45848, 51058, 51579, 65646, 68772, 76587, 80234, 87528, 102116, 103158, 120351, 131292, 137544, 153174, 160468, 204232, 206316, 229761, 240702, 262584, 280819, 306348, 320936, 361053, 412632, 459522, 481404, 561638, 612696, 722106, 842457, 919044, 962808, 1123276, 1444212, 1684914, 1838088, 2246552, 2527371, 2888424, 3369828, 5054742, 6739656, 10109484, 20218968]

約数ペア:

[(1, 20218968), (2, 10109484), (3, 6739656), (4, 5054742), (6, 3369828), (7, 2888424), (8, 2527371), (9, 2246552), (11, 1838088), (12, 1684914), (14, 1444212), (18, 1123276), (21, 962808), (22, 919044), (24, 842457), (28, 722106), (33, 612696), (36, 561638), (42, 481404), (44, 459522), (49, 412632), (56, 361053), (63, 320936), (66, 306348), (72, 280819), (77, 262584), (84, 240702), (88, 229761), (98, 206316), (99, 204232), (126, 160468), (132, 153174), (147, 137544), (154, 131292), (168, 120351), (196, 103158), (198, 102116), (231, 87528), (252, 80234), (264, 76587), (294, 68772), (308, 65646), (392, 51579), (396, 51058), (441, 45848), (462, 43764), (504, 40117), (521, 38808), (539, 37512), (588, 34386), (616, 32823), (693, 29176), (792, 25529), (882, 22924), (924, 21882), (1042, 19404), (1078, 18756), (1176, 17193), (1386, 14588), (1563, 12936), (1617, 12504), (1764, 11462), (1848, 10941), (2084, 9702), (2156, 9378), (2772, 7294), (3126, 6468), (3234, 6252), (3528, 5731), (3647, 5544), (4168, 4851), (4312, 4689)]