21531048

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:279

約数の個数: 128

約数和(自身を含む): 68567040

約数和(自身を除く): 47035992

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 61, 66, 77, 84, 88, 122, 132, 154, 168, 183, 191, 231, 244, 264, 308, 366, 382, 427, 462, 488, 573, 616, 671, 732, 764, 854, 924, 1146, 1281, 1337, 1342, 1464, 1528, 1708, 1848, 2013, 2101, 2292, 2562, 2674, 2684, 3416, 4011, 4026, 4202, 4584, 4697, 5124, 5348, 5368, 6303, 8022, 8052, 8404, 9394, 10248, 10696, 11651, 12606, 14091, 14707, 16044, 16104, 16808, 18788, 23302, 25212, 28182, 29414, 32088, 34953, 37576, 44121, 46604, 50424, 56364, 58828, 69906, 81557, 88242, 93208, 112728, 117656, 128161, 139812, 163114, 176484, 244671, 256322, 279624, 326228, 352968, 384483, 489342, 512644, 652456, 768966, 897127, 978684, 1025288, 1537932, 1794254, 1957368, 2691381, 3075864, 3588508, 5382762, 7177016, 10765524, 21531048]

約数ペア:

[(1, 21531048), (2, 10765524), (3, 7177016), (4, 5382762), (6, 3588508), (7, 3075864), (8, 2691381), (11, 1957368), (12, 1794254), (14, 1537932), (21, 1025288), (22, 978684), (24, 897127), (28, 768966), (33, 652456), (42, 512644), (44, 489342), (56, 384483), (61, 352968), (66, 326228), (77, 279624), (84, 256322), (88, 244671), (122, 176484), (132, 163114), (154, 139812), (168, 128161), (183, 117656), (191, 112728), (231, 93208), (244, 88242), (264, 81557), (308, 69906), (366, 58828), (382, 56364), (427, 50424), (462, 46604), (488, 44121), (573, 37576), (616, 34953), (671, 32088), (732, 29414), (764, 28182), (854, 25212), (924, 23302), (1146, 18788), (1281, 16808), (1337, 16104), (1342, 16044), (1464, 14707), (1528, 14091), (1708, 12606), (1848, 11651), (2013, 10696), (2101, 10248), (2292, 9394), (2562, 8404), (2674, 8052), (2684, 8022), (3416, 6303), (4011, 5368), (4026, 5348), (4202, 5124), (4584, 4697)]