19912347

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{593}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 36324288

約数和(自身を除く): 16411941

約数列:

[1, 3, 7, 9, 13, 21, 39, 41, 63, 91, 117, 123, 273, 287, 369, 533, 593, 819, 861, 1599, 1779, 2583, 3731, 4151, 4797, 5337, 7709, 11193, 12453, 23127, 24313, 33579, 37359, 53963, 69381, 72939, 161889, 170191, 218817, 316069, 485667, 510573, 948207, 1531719, 2212483, 2844621, 6637449, 19912347]

約数ペア:

[(1, 19912347), (3, 6637449), (7, 2844621), (9, 2212483), (13, 1531719), (21, 948207), (39, 510573), (41, 485667), (63, 316069), (91, 218817), (117, 170191), (123, 161889), (273, 72939), (287, 69381), (369, 53963), (533, 37359), (593, 33579), (819, 24313), (861, 23127), (1599, 12453), (1779, 11193), (2583, 7709), (3731, 5337), (4151, 4797)]