21157620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{32057}}^1$

素因数の和:32080

約数の個数: 48

約数和(自身を含む): 64628928

約数和(自身を除く): 43471308

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 32057, 64114, 96171, 128228, 160285, 192342, 320570, 352627, 384684, 480855, 641140, 705254, 961710, 1057881, 1410508, 1763135, 1923420, 2115762, 3526270, 4231524, 5289405, 7052540, 10578810, 21157620]

約数ペア:

[(1, 21157620), (2, 10578810), (3, 7052540), (4, 5289405), (5, 4231524), (6, 3526270), (10, 2115762), (11, 1923420), (12, 1763135), (15, 1410508), (20, 1057881), (22, 961710), (30, 705254), (33, 641140), (44, 480855), (55, 384684), (60, 352627), (66, 320570), (110, 192342), (132, 160285), (165, 128228), (220, 96171), (330, 64114), (660, 32057)]