21271716

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:393

約数の個数: 72

約数和(自身を含む): 57264480

約数和(自身を除く): 35992764

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 137, 171, 227, 228, 274, 342, 411, 454, 548, 681, 684, 822, 908, 1233, 1362, 1644, 2043, 2466, 2603, 2724, 4086, 4313, 4932, 5206, 7809, 8172, 8626, 10412, 12939, 15618, 17252, 23427, 25878, 31099, 31236, 38817, 46854, 51756, 62198, 77634, 93297, 93708, 124396, 155268, 186594, 279891, 373188, 559782, 590881, 1119564, 1181762, 1772643, 2363524, 3545286, 5317929, 7090572, 10635858, 21271716]

約数ペア:

[(1, 21271716), (2, 10635858), (3, 7090572), (4, 5317929), (6, 3545286), (9, 2363524), (12, 1772643), (18, 1181762), (19, 1119564), (36, 590881), (38, 559782), (57, 373188), (76, 279891), (114, 186594), (137, 155268), (171, 124396), (227, 93708), (228, 93297), (274, 77634), (342, 62198), (411, 51756), (454, 46854), (548, 38817), (681, 31236), (684, 31099), (822, 25878), (908, 23427), (1233, 17252), (1362, 15618), (1644, 12939), (2043, 10412), (2466, 8626), (2603, 8172), (2724, 7809), (4086, 5206), (4313, 4932)]