81311868

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 240589440

約数和(自身を除く): 159277572

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 19, 22, 33, 36, 38, 44, 57, 66, 76, 99, 101, 107, 114, 132, 171, 198, 202, 209, 214, 228, 303, 321, 342, 396, 404, 418, 428, 606, 627, 642, 684, 836, 909, 963, 1111, 1177, 1212, 1254, 1284, 1818, 1881, 1919, 1926, 2033, 2222, 2354, 2508, 3333, 3531, 3636, 3762, 3838, 3852, 4066, 4444, 4708, 5757, 6099, 6666, 7062, 7524, 7676, 8132, 9999, 10593, 10807, 11514, 12198, 13332, 14124, 17271, 18297, 19998, 21109, 21186, 21614, 22363, 23028, 24396, 32421, 34542, 36594, 39996, 42218, 42372, 43228, 44726, 63327, 64842, 67089, 69084, 73188, 84436, 89452, 97263, 118877, 126654, 129684, 134178, 189981, 194526, 201267, 205333, 237754, 253308, 268356, 356631, 379962, 389052, 402534, 410666, 475508, 615999, 713262, 759924, 805068, 821332, 1069893, 1231998, 1426524, 1847997, 2139786, 2258663, 2463996, 3695994, 4279572, 4517326, 6775989, 7391988, 9034652, 13551978, 20327967, 27103956, 40655934, 81311868]

約数ペア:

[(1, 81311868), (2, 40655934), (3, 27103956), (4, 20327967), (6, 13551978), (9, 9034652), (11, 7391988), (12, 6775989), (18, 4517326), (19, 4279572), (22, 3695994), (33, 2463996), (36, 2258663), (38, 2139786), (44, 1847997), (57, 1426524), (66, 1231998), (76, 1069893), (99, 821332), (101, 805068), (107, 759924), (114, 713262), (132, 615999), (171, 475508), (198, 410666), (202, 402534), (209, 389052), (214, 379962), (228, 356631), (303, 268356), (321, 253308), (342, 237754), (396, 205333), (404, 201267), (418, 194526), (428, 189981), (606, 134178), (627, 129684), (642, 126654), (684, 118877), (836, 97263), (909, 89452), (963, 84436), (1111, 73188), (1177, 69084), (1212, 67089), (1254, 64842), (1284, 63327), (1818, 44726), (1881, 43228), (1919, 42372), (1926, 42218), (2033, 39996), (2222, 36594), (2354, 34542), (2508, 32421), (3333, 24396), (3531, 23028), (3636, 22363), (3762, 21614), (3838, 21186), (3852, 21109), (4066, 19998), (4444, 18297), (4708, 17271), (5757, 14124), (6099, 13332), (6666, 12198), (7062, 11514), (7524, 10807), (7676, 10593), (8132, 9999)]