81806571

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{109}}^1$

素因数の和:174

約数の個数: 96

約数和(自身を含む): 160934400

約数和(自身を除く): 79127829

約数列:

[1, 3, 7, 9, 11, 19, 21, 27, 33, 57, 63, 77, 99, 109, 133, 171, 189, 209, 231, 297, 327, 361, 399, 513, 627, 693, 763, 981, 1083, 1197, 1199, 1463, 1881, 2071, 2079, 2289, 2527, 2943, 3249, 3591, 3597, 3971, 4389, 5643, 6213, 6867, 7581, 8393, 9747, 10791, 11913, 13167, 14497, 18639, 20601, 22743, 22781, 25179, 27797, 32373, 35739, 39349, 39501, 43491, 55917, 68229, 68343, 75537, 83391, 107217, 118047, 130473, 159467, 205029, 226611, 250173, 275443, 354141, 391419, 432839, 478401, 615087, 750519, 826329, 1062423, 1298517, 1435203, 2478987, 3029873, 3895551, 4305609, 7436961, 9089619, 11686653, 27268857, 81806571]

約数ペア:

[(1, 81806571), (3, 27268857), (7, 11686653), (9, 9089619), (11, 7436961), (19, 4305609), (21, 3895551), (27, 3029873), (33, 2478987), (57, 1435203), (63, 1298517), (77, 1062423), (99, 826329), (109, 750519), (133, 615087), (171, 478401), (189, 432839), (209, 391419), (231, 354141), (297, 275443), (327, 250173), (361, 226611), (399, 205029), (513, 159467), (627, 130473), (693, 118047), (763, 107217), (981, 83391), (1083, 75537), (1197, 68343), (1199, 68229), (1463, 55917), (1881, 43491), (2071, 39501), (2079, 39349), (2289, 35739), (2527, 32373), (2943, 27797), (3249, 25179), (3591, 22781), (3597, 22743), (3971, 20601), (4389, 18639), (5643, 14497), (6213, 13167), (6867, 11913), (7581, 10791), (8393, 9747)]