21329847

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4397}}^1$

素因数の和:4428

約数の個数: 36

約数和(自身を含む): 39107016

約数和(自身を除く): 17777169

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 441, 539, 693, 1617, 4397, 4851, 13191, 30779, 39573, 48367, 92337, 145101, 215453, 277011, 338569, 435303, 646359, 1015707, 1939077, 2369983, 3047121, 7109949, 21329847]

約数ペア:

[(1, 21329847), (3, 7109949), (7, 3047121), (9, 2369983), (11, 1939077), (21, 1015707), (33, 646359), (49, 435303), (63, 338569), (77, 277011), (99, 215453), (147, 145101), (231, 92337), (441, 48367), (539, 39573), (693, 30779), (1617, 13191), (4397, 4851)]