21681648

素因数分解:

$2^4\times 3^3\times {\mathrm{31}}^1\times {\mathrm{1619}}^1$

素因数の和:1667

約数の個数: 80

約数和(自身を含む): 64281600

約数和(自身を除く): 42599952

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 36, 48, 54, 62, 72, 93, 108, 124, 144, 186, 216, 248, 279, 372, 432, 496, 558, 744, 837, 1116, 1488, 1619, 1674, 2232, 3238, 3348, 4464, 4857, 6476, 6696, 9714, 12952, 13392, 14571, 19428, 25904, 29142, 38856, 43713, 50189, 58284, 77712, 87426, 100378, 116568, 150567, 174852, 200756, 233136, 301134, 349704, 401512, 451701, 602268, 699408, 803024, 903402, 1204536, 1355103, 1806804, 2409072, 2710206, 3613608, 5420412, 7227216, 10840824, 21681648]

約数ペア:

[(1, 21681648), (2, 10840824), (3, 7227216), (4, 5420412), (6, 3613608), (8, 2710206), (9, 2409072), (12, 1806804), (16, 1355103), (18, 1204536), (24, 903402), (27, 803024), (31, 699408), (36, 602268), (48, 451701), (54, 401512), (62, 349704), (72, 301134), (93, 233136), (108, 200756), (124, 174852), (144, 150567), (186, 116568), (216, 100378), (248, 87426), (279, 77712), (372, 58284), (432, 50189), (496, 43713), (558, 38856), (744, 29142), (837, 25904), (1116, 19428), (1488, 14571), (1619, 13392), (1674, 12952), (2232, 9714), (3238, 6696), (3348, 6476), (4464, 4857)]