21205841289

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{1627}}^1\times {\mathrm{81973}}^1$

素因数の和:83656

約数の個数: 16

約数和(自身を含む): 28825993152

約数和(自身を除く): 7620151863

約数列:

[1, 3, 53, 159, 1627, 4881, 81973, 86231, 245919, 258693, 4344569, 13033707, 133370071, 400110213, 7068613763, 21205841289]

約数ペア:

[(1, 21205841289), (3, 7068613763), (53, 400110213), (159, 133370071), (1627, 13033707), (4881, 4344569), (81973, 258693), (86231, 245919)]