21338163

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{751}}^1$

素因数の和:816

約数の個数: 48

約数和(自身を含む): 39416832

約数和(自身を除く): 18078669

約数列:

[1, 3, 7, 9, 11, 21, 33, 41, 63, 77, 99, 123, 231, 287, 369, 451, 693, 751, 861, 1353, 2253, 2583, 3157, 4059, 5257, 6759, 8261, 9471, 15771, 24783, 28413, 30791, 47313, 57827, 74349, 92373, 173481, 215537, 277119, 338701, 520443, 646611, 1016103, 1939833, 2370907, 3048309, 7112721, 21338163]

約数ペア:

[(1, 21338163), (3, 7112721), (7, 3048309), (9, 2370907), (11, 1939833), (21, 1016103), (33, 646611), (41, 520443), (63, 338701), (77, 277119), (99, 215537), (123, 173481), (231, 92373), (287, 74349), (369, 57827), (451, 47313), (693, 30791), (751, 28413), (861, 24783), (1353, 15771), (2253, 9471), (2583, 8261), (3157, 6759), (4059, 5257)]