217805588

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:470

約数の個数: 144

約数和(自身を含む): 549662400

約数和(自身を除く): 331856812

約数列:

[1, 2, 4, 7, 11, 13, 14, 19, 22, 26, 28, 38, 44, 49, 52, 76, 77, 91, 98, 133, 143, 154, 182, 196, 209, 247, 266, 286, 308, 364, 409, 418, 494, 532, 539, 572, 637, 818, 836, 931, 988, 1001, 1078, 1274, 1463, 1636, 1729, 1862, 2002, 2156, 2548, 2717, 2863, 2926, 3458, 3724, 4004, 4499, 5317, 5434, 5726, 5852, 6916, 7007, 7771, 8998, 10241, 10634, 10868, 11452, 12103, 14014, 15542, 17996, 19019, 20041, 20482, 21268, 24206, 28028, 31084, 31493, 37219, 38038, 40082, 40964, 48412, 54397, 58487, 62986, 74438, 76076, 80164, 85481, 101023, 108794, 116974, 125972, 133133, 148876, 170962, 202046, 217588, 220451, 233948, 260533, 266266, 341924, 380779, 404092, 409409, 440902, 521066, 532532, 598367, 707161, 761558, 818818, 881804, 1042132, 1111253, 1196734, 1414322, 1523116, 1637636, 2222506, 2393468, 2828644, 2865863, 4188569, 4445012, 4950127, 5731726, 7778771, 8377138, 9900254, 11463452, 15557542, 16754276, 19800508, 31115084, 54451397, 108902794, 217805588]

約数ペア:

[(1, 217805588), (2, 108902794), (4, 54451397), (7, 31115084), (11, 19800508), (13, 16754276), (14, 15557542), (19, 11463452), (22, 9900254), (26, 8377138), (28, 7778771), (38, 5731726), (44, 4950127), (49, 4445012), (52, 4188569), (76, 2865863), (77, 2828644), (91, 2393468), (98, 2222506), (133, 1637636), (143, 1523116), (154, 1414322), (182, 1196734), (196, 1111253), (209, 1042132), (247, 881804), (266, 818818), (286, 761558), (308, 707161), (364, 598367), (409, 532532), (418, 521066), (494, 440902), (532, 409409), (539, 404092), (572, 380779), (637, 341924), (818, 266266), (836, 260533), (931, 233948), (988, 220451), (1001, 217588), (1078, 202046), (1274, 170962), (1463, 148876), (1636, 133133), (1729, 125972), (1862, 116974), (2002, 108794), (2156, 101023), (2548, 85481), (2717, 80164), (2863, 76076), (2926, 74438), (3458, 62986), (3724, 58487), (4004, 54397), (4499, 48412), (5317, 40964), (5434, 40082), (5726, 38038), (5852, 37219), (6916, 31493), (7007, 31084), (7771, 28028), (8998, 24206), (10241, 21268), (10634, 20482), (10868, 20041), (11452, 19019), (12103, 17996), (14014, 15542)]