21311862

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{421}}^1$

素因数の和:509

約数の個数: 64

約数和(自身を含む): 51045120

約数和(自身を除く): 29733258

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 59, 66, 78, 118, 143, 177, 286, 354, 421, 429, 649, 767, 842, 858, 1263, 1298, 1534, 1947, 2301, 2526, 3894, 4602, 4631, 5473, 8437, 9262, 10946, 13893, 16419, 16874, 24839, 25311, 27786, 32838, 49678, 50622, 60203, 74517, 120406, 149034, 180609, 273229, 322907, 361218, 546458, 645814, 819687, 968721, 1639374, 1937442, 3551977, 7103954, 10655931, 21311862]

約数ペア:

[(1, 21311862), (2, 10655931), (3, 7103954), (6, 3551977), (11, 1937442), (13, 1639374), (22, 968721), (26, 819687), (33, 645814), (39, 546458), (59, 361218), (66, 322907), (78, 273229), (118, 180609), (143, 149034), (177, 120406), (286, 74517), (354, 60203), (421, 50622), (429, 49678), (649, 32838), (767, 27786), (842, 25311), (858, 24839), (1263, 16874), (1298, 16419), (1534, 13893), (1947, 10946), (2301, 9262), (2526, 8437), (3894, 5473), (4602, 4631)]