21275730

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{11257}}^1$

素因数の和:11280

約数の個数: 64

約数和(自身を含む): 64846080

約数和(自身を除く): 43570350

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 11257, 22514, 33771, 56285, 67542, 78799, 101313, 112570, 157598, 168855, 202626, 236397, 303939, 337710, 393995, 472794, 506565, 607878, 709191, 787990, 1013130, 1181985, 1418382, 1519695, 2127573, 2363970, 3039390, 3545955, 4255146, 7091910, 10637865, 21275730]

約数ペア:

[(1, 21275730), (2, 10637865), (3, 7091910), (5, 4255146), (6, 3545955), (7, 3039390), (9, 2363970), (10, 2127573), (14, 1519695), (15, 1418382), (18, 1181985), (21, 1013130), (27, 787990), (30, 709191), (35, 607878), (42, 506565), (45, 472794), (54, 393995), (63, 337710), (70, 303939), (90, 236397), (105, 202626), (126, 168855), (135, 157598), (189, 112570), (210, 101313), (270, 78799), (315, 67542), (378, 56285), (630, 33771), (945, 22514), (1890, 11257)]