21741909

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1879}}^1$

素因数の和:1937

約数の個数: 32

約数和(自身を含む): 36096000

約数和(自身を除く): 14354091

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 1879, 3857, 5637, 11571, 13153, 35701, 39459, 54491, 107103, 163473, 249907, 381437, 749721, 1035329, 1144311, 3105987, 7247303, 21741909]

約数ペア:

[(1, 21741909), (3, 7247303), (7, 3105987), (19, 1144311), (21, 1035329), (29, 749721), (57, 381437), (87, 249907), (133, 163473), (203, 107103), (399, 54491), (551, 39459), (609, 35701), (1653, 13153), (1879, 11571), (3857, 5637)]