21016962

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 48992640

約数和(自身を除く): 27975678

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 67, 74, 111, 134, 157, 201, 222, 314, 333, 402, 471, 603, 666, 942, 999, 1206, 1413, 1809, 1998, 2479, 2826, 3618, 4239, 4958, 5809, 7437, 8478, 10519, 11618, 14874, 17427, 21038, 22311, 31557, 34854, 44622, 52281, 63114, 66933, 94671, 104562, 133866, 156843, 189342, 284013, 313686, 389203, 568026, 778406, 1167609, 2335218, 3502827, 7005654, 10508481, 21016962]

約数ペア:

[(1, 21016962), (2, 10508481), (3, 7005654), (6, 3502827), (9, 2335218), (18, 1167609), (27, 778406), (37, 568026), (54, 389203), (67, 313686), (74, 284013), (111, 189342), (134, 156843), (157, 133866), (201, 104562), (222, 94671), (314, 66933), (333, 63114), (402, 52281), (471, 44622), (603, 34854), (666, 31557), (942, 22311), (999, 21038), (1206, 17427), (1413, 14874), (1809, 11618), (1998, 10519), (2479, 8478), (2826, 7437), (3618, 5809), (4239, 4958)]