21320064

素因数分解:

$2^7\times 3^3\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:253

約数の個数: 128

約数和(自身を含む): 65280000

約数和(自身を除く): 43959936

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 32, 36, 48, 54, 62, 64, 72, 93, 96, 108, 124, 128, 144, 186, 192, 199, 216, 248, 279, 288, 372, 384, 398, 432, 496, 558, 576, 597, 744, 796, 837, 864, 992, 1116, 1152, 1194, 1488, 1592, 1674, 1728, 1791, 1984, 2232, 2388, 2976, 3184, 3348, 3456, 3582, 3968, 4464, 4776, 5373, 5952, 6169, 6368, 6696, 7164, 8928, 9552, 10746, 11904, 12338, 12736, 13392, 14328, 17856, 18507, 19104, 21492, 24676, 25472, 26784, 28656, 35712, 37014, 38208, 42984, 49352, 53568, 55521, 57312, 74028, 76416, 85968, 98704, 107136, 111042, 114624, 148056, 166563, 171936, 197408, 222084, 229248, 296112, 333126, 343872, 394816, 444168, 592224, 666252, 687744, 789632, 888336, 1184448, 1332504, 1776672, 2368896, 2665008, 3553344, 5330016, 7106688, 10660032, 21320064]

約数ペア:

[(1, 21320064), (2, 10660032), (3, 7106688), (4, 5330016), (6, 3553344), (8, 2665008), (9, 2368896), (12, 1776672), (16, 1332504), (18, 1184448), (24, 888336), (27, 789632), (31, 687744), (32, 666252), (36, 592224), (48, 444168), (54, 394816), (62, 343872), (64, 333126), (72, 296112), (93, 229248), (96, 222084), (108, 197408), (124, 171936), (128, 166563), (144, 148056), (186, 114624), (192, 111042), (199, 107136), (216, 98704), (248, 85968), (279, 76416), (288, 74028), (372, 57312), (384, 55521), (398, 53568), (432, 49352), (496, 42984), (558, 38208), (576, 37014), (597, 35712), (744, 28656), (796, 26784), (837, 25472), (864, 24676), (992, 21492), (1116, 19104), (1152, 18507), (1194, 17856), (1488, 14328), (1592, 13392), (1674, 12736), (1728, 12338), (1791, 11904), (1984, 10746), (2232, 9552), (2388, 8928), (2976, 7164), (3184, 6696), (3348, 6368), (3456, 6169), (3582, 5952), (3968, 5373), (4464, 4776)]