20789580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49499}}^1$

素因数の和:49518

約数の個数: 48

約数和(自身を含む): 66528000

約数和(自身を除く): 45738420

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49499, 98998, 148497, 197996, 247495, 296994, 346493, 494990, 593988, 692986, 742485, 989980, 1039479, 1385972, 1484970, 1732465, 2078958, 2969940, 3464930, 4157916, 5197395, 6929860, 10394790, 20789580]

約数ペア:

[(1, 20789580), (2, 10394790), (3, 6929860), (4, 5197395), (5, 4157916), (6, 3464930), (7, 2969940), (10, 2078958), (12, 1732465), (14, 1484970), (15, 1385972), (20, 1039479), (21, 989980), (28, 742485), (30, 692986), (35, 593988), (42, 494990), (60, 346493), (70, 296994), (84, 247495), (105, 197996), (140, 148497), (210, 98998), (420, 49499)]