21101328

素因数分解:

$2^4\times 3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:237

約数の個数: 120

約数和(自身を含む): 63448320

約数和(自身を除く): 42346992

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 29, 31, 36, 48, 58, 62, 72, 87, 93, 116, 124, 144, 163, 174, 186, 232, 248, 261, 279, 326, 348, 372, 464, 489, 496, 522, 558, 652, 696, 744, 899, 978, 1044, 1116, 1304, 1392, 1467, 1488, 1798, 1956, 2088, 2232, 2608, 2697, 2934, 3596, 3912, 4176, 4464, 4727, 5053, 5394, 5868, 7192, 7824, 8091, 9454, 10106, 10788, 11736, 14181, 14384, 15159, 16182, 18908, 20212, 21576, 23472, 28362, 30318, 32364, 37816, 40424, 42543, 43152, 45477, 56724, 60636, 64728, 75632, 80848, 85086, 90954, 113448, 121272, 129456, 146537, 170172, 181908, 226896, 242544, 293074, 340344, 363816, 439611, 586148, 680688, 727632, 879222, 1172296, 1318833, 1758444, 2344592, 2637666, 3516888, 5275332, 7033776, 10550664, 21101328]

約数ペア:

[(1, 21101328), (2, 10550664), (3, 7033776), (4, 5275332), (6, 3516888), (8, 2637666), (9, 2344592), (12, 1758444), (16, 1318833), (18, 1172296), (24, 879222), (29, 727632), (31, 680688), (36, 586148), (48, 439611), (58, 363816), (62, 340344), (72, 293074), (87, 242544), (93, 226896), (116, 181908), (124, 170172), (144, 146537), (163, 129456), (174, 121272), (186, 113448), (232, 90954), (248, 85086), (261, 80848), (279, 75632), (326, 64728), (348, 60636), (372, 56724), (464, 45477), (489, 43152), (496, 42543), (522, 40424), (558, 37816), (652, 32364), (696, 30318), (744, 28362), (899, 23472), (978, 21576), (1044, 20212), (1116, 18908), (1304, 16182), (1392, 15159), (1467, 14384), (1488, 14181), (1798, 11736), (1956, 10788), (2088, 10106), (2232, 9454), (2608, 8091), (2697, 7824), (2934, 7192), (3596, 5868), (3912, 5394), (4176, 5053), (4464, 4727)]