661878204

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:384

約数の個数: 144

約数和(自身を含む): 1806604128

約数和(自身を除く): 1144725924

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 53, 68, 78, 102, 106, 156, 159, 204, 212, 221, 277, 289, 318, 442, 554, 578, 636, 663, 689, 831, 867, 884, 901, 1108, 1156, 1326, 1378, 1662, 1734, 1802, 2067, 2652, 2703, 2756, 3324, 3468, 3601, 3604, 3757, 4134, 4709, 5406, 7202, 7514, 8268, 9418, 10803, 10812, 11271, 11713, 14127, 14404, 14681, 15028, 15317, 18836, 21606, 22542, 23426, 28254, 29362, 30634, 35139, 43212, 44043, 45084, 45951, 46852, 56508, 58724, 61217, 61268, 70278, 80053, 88086, 91902, 122434, 140556, 160106, 176172, 183651, 183804, 190853, 199121, 240159, 244868, 249577, 320212, 367302, 381706, 398242, 480318, 499154, 572559, 597363, 734604, 748731, 763412, 796484, 960636, 998308, 1040689, 1145118, 1194726, 1497462, 2081378, 2290236, 2389452, 2994924, 3122067, 3244501, 4162756, 4242809, 6244134, 6489002, 8485618, 9733503, 12488268, 12728427, 12978004, 16971236, 19467006, 25456854, 38934012, 50913708, 55156517, 110313034, 165469551, 220626068, 330939102, 661878204]

約数ペア:

[(1, 661878204), (2, 330939102), (3, 220626068), (4, 165469551), (6, 110313034), (12, 55156517), (13, 50913708), (17, 38934012), (26, 25456854), (34, 19467006), (39, 16971236), (51, 12978004), (52, 12728427), (53, 12488268), (68, 9733503), (78, 8485618), (102, 6489002), (106, 6244134), (156, 4242809), (159, 4162756), (204, 3244501), (212, 3122067), (221, 2994924), (277, 2389452), (289, 2290236), (318, 2081378), (442, 1497462), (554, 1194726), (578, 1145118), (636, 1040689), (663, 998308), (689, 960636), (831, 796484), (867, 763412), (884, 748731), (901, 734604), (1108, 597363), (1156, 572559), (1326, 499154), (1378, 480318), (1662, 398242), (1734, 381706), (1802, 367302), (2067, 320212), (2652, 249577), (2703, 244868), (2756, 240159), (3324, 199121), (3468, 190853), (3601, 183804), (3604, 183651), (3757, 176172), (4134, 160106), (4709, 140556), (5406, 122434), (7202, 91902), (7514, 88086), (8268, 80053), (9418, 70278), (10803, 61268), (10812, 61217), (11271, 58724), (11713, 56508), (14127, 46852), (14404, 45951), (14681, 45084), (15028, 44043), (15317, 43212), (18836, 35139), (21606, 30634), (22542, 29362), (23426, 28254)]