20804212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{983}}^1$

素因数の和:1048

約数の個数: 48

約数和(自身を含む): 43972992

約数和(自身を除く): 23168780

約数列:

[1, 2, 4, 11, 13, 22, 26, 37, 44, 52, 74, 143, 148, 286, 407, 481, 572, 814, 962, 983, 1628, 1924, 1966, 3932, 5291, 10582, 10813, 12779, 21164, 21626, 25558, 36371, 43252, 51116, 72742, 140569, 145484, 281138, 400081, 472823, 562276, 800162, 945646, 1600324, 1891292, 5201053, 10402106, 20804212]

約数ペア:

[(1, 20804212), (2, 10402106), (4, 5201053), (11, 1891292), (13, 1600324), (22, 945646), (26, 800162), (37, 562276), (44, 472823), (52, 400081), (74, 281138), (143, 145484), (148, 140569), (286, 72742), (407, 51116), (481, 43252), (572, 36371), (814, 25558), (962, 21626), (983, 21164), (1628, 12779), (1924, 10813), (1966, 10582), (3932, 5291)]