21300741

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4391}}^1$

素因数の和:4422

約数の個数: 36

約数和(自身を含む): 39053664

約数和(自身を除く): 17752923

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 441, 539, 693, 1617, 4391, 4851, 13173, 30737, 39519, 48301, 92211, 144903, 215159, 276633, 338107, 434709, 645477, 1014321, 1936431, 2366749, 3042963, 7100247, 21300741]

約数ペア:

[(1, 21300741), (3, 7100247), (7, 3042963), (9, 2366749), (11, 1936431), (21, 1014321), (33, 645477), (49, 434709), (63, 338107), (77, 276633), (99, 215159), (147, 144903), (231, 92211), (441, 48301), (539, 39519), (693, 30737), (1617, 13173), (4391, 4851)]