81278964

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{839}}^1$

素因数の和:891

約数の個数: 120

約数和(自身を含む): 239057280

約数和(自身を除く): 157778316

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 23, 26, 27, 36, 39, 46, 52, 54, 69, 78, 81, 92, 108, 117, 138, 156, 162, 207, 234, 276, 299, 324, 351, 414, 468, 598, 621, 702, 828, 839, 897, 1053, 1196, 1242, 1404, 1678, 1794, 1863, 2106, 2484, 2517, 2691, 3356, 3588, 3726, 4212, 5034, 5382, 7452, 7551, 8073, 10068, 10764, 10907, 15102, 16146, 19297, 21814, 22653, 24219, 30204, 32292, 32721, 38594, 43628, 45306, 48438, 57891, 65442, 67959, 77188, 90612, 96876, 98163, 115782, 130884, 135918, 173673, 196326, 231564, 250861, 271836, 294489, 347346, 392652, 501722, 521019, 588978, 694692, 752583, 883467, 1003444, 1042038, 1177956, 1505166, 1563057, 1766934, 2084076, 2257749, 3010332, 3126114, 3533868, 4515498, 6252228, 6773247, 9030996, 13546494, 20319741, 27092988, 40639482, 81278964]

約数ペア:

[(1, 81278964), (2, 40639482), (3, 27092988), (4, 20319741), (6, 13546494), (9, 9030996), (12, 6773247), (13, 6252228), (18, 4515498), (23, 3533868), (26, 3126114), (27, 3010332), (36, 2257749), (39, 2084076), (46, 1766934), (52, 1563057), (54, 1505166), (69, 1177956), (78, 1042038), (81, 1003444), (92, 883467), (108, 752583), (117, 694692), (138, 588978), (156, 521019), (162, 501722), (207, 392652), (234, 347346), (276, 294489), (299, 271836), (324, 250861), (351, 231564), (414, 196326), (468, 173673), (598, 135918), (621, 130884), (702, 115782), (828, 98163), (839, 96876), (897, 90612), (1053, 77188), (1196, 67959), (1242, 65442), (1404, 57891), (1678, 48438), (1794, 45306), (1863, 43628), (2106, 38594), (2484, 32721), (2517, 32292), (2691, 30204), (3356, 24219), (3588, 22653), (3726, 21814), (4212, 19297), (5034, 16146), (5382, 15102), (7452, 10907), (7551, 10764), (8073, 10068)]