21799239

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{373}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 38201856

約数和(自身を除く): 16402617

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 77, 121, 161, 231, 253, 363, 373, 483, 759, 847, 1119, 1771, 2541, 2611, 2783, 4103, 5313, 7833, 8349, 8579, 12309, 19481, 25737, 28721, 45133, 58443, 60053, 86163, 94369, 135399, 180159, 283107, 315931, 660583, 947793, 1038059, 1981749, 3114177, 7266413, 21799239]

約数ペア:

[(1, 21799239), (3, 7266413), (7, 3114177), (11, 1981749), (21, 1038059), (23, 947793), (33, 660583), (69, 315931), (77, 283107), (121, 180159), (161, 135399), (231, 94369), (253, 86163), (363, 60053), (373, 58443), (483, 45133), (759, 28721), (847, 25737), (1119, 19481), (1771, 12309), (2541, 8579), (2611, 8349), (2783, 7833), (4103, 5313)]