21679728

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{571}}^1$

素因数の和:702

約数の個数: 80

約数和(自身を含む): 64686336

約数和(自身を除く): 43006608

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 113, 168, 226, 336, 339, 452, 571, 678, 791, 904, 1142, 1356, 1582, 1713, 1808, 2284, 2373, 2712, 3164, 3426, 3997, 4568, 4746, 5424, 6328, 6852, 7994, 9136, 9492, 11991, 12656, 13704, 15988, 18984, 23982, 27408, 31976, 37968, 47964, 63952, 64523, 95928, 129046, 191856, 193569, 258092, 387138, 451661, 516184, 774276, 903322, 1032368, 1354983, 1548552, 1806644, 2709966, 3097104, 3613288, 5419932, 7226576, 10839864, 21679728]

約数ペア:

[(1, 21679728), (2, 10839864), (3, 7226576), (4, 5419932), (6, 3613288), (7, 3097104), (8, 2709966), (12, 1806644), (14, 1548552), (16, 1354983), (21, 1032368), (24, 903322), (28, 774276), (42, 516184), (48, 451661), (56, 387138), (84, 258092), (112, 193569), (113, 191856), (168, 129046), (226, 95928), (336, 64523), (339, 63952), (452, 47964), (571, 37968), (678, 31976), (791, 27408), (904, 23982), (1142, 18984), (1356, 15988), (1582, 13704), (1713, 12656), (1808, 11991), (2284, 9492), (2373, 9136), (2712, 7994), (3164, 6852), (3426, 6328), (3997, 5424), (4568, 4746)]