81164556

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{2113}}^1$

素因数の和:2231

約数の個数: 72

約数和(自身を含む): 226231824

約数和(自身を除く): 145067268

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 97, 99, 132, 194, 198, 291, 388, 396, 582, 873, 1067, 1164, 1746, 2113, 2134, 3201, 3492, 4226, 4268, 6339, 6402, 8452, 9603, 12678, 12804, 19017, 19206, 23243, 25356, 38034, 38412, 46486, 69729, 76068, 92972, 139458, 204961, 209187, 278916, 409922, 418374, 614883, 819844, 836748, 1229766, 1844649, 2254571, 2459532, 3689298, 4509142, 6763713, 7378596, 9018284, 13527426, 20291139, 27054852, 40582278, 81164556]

約数ペア:

[(1, 81164556), (2, 40582278), (3, 27054852), (4, 20291139), (6, 13527426), (9, 9018284), (11, 7378596), (12, 6763713), (18, 4509142), (22, 3689298), (33, 2459532), (36, 2254571), (44, 1844649), (66, 1229766), (97, 836748), (99, 819844), (132, 614883), (194, 418374), (198, 409922), (291, 278916), (388, 209187), (396, 204961), (582, 139458), (873, 92972), (1067, 76068), (1164, 69729), (1746, 46486), (2113, 38412), (2134, 38034), (3201, 25356), (3492, 23243), (4226, 19206), (4268, 19017), (6339, 12804), (6402, 12678), (8452, 9603)]