21583107

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{73}}^1$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 41050464

約数和(自身を除く): 19467357

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 57, 63, 73, 91, 117, 133, 171, 219, 247, 273, 361, 399, 511, 657, 741, 819, 949, 1083, 1197, 1387, 1533, 1729, 2223, 2527, 2847, 3249, 4161, 4599, 4693, 5187, 6643, 7581, 8541, 9709, 12483, 14079, 15561, 18031, 19929, 22743, 26353, 29127, 32851, 42237, 54093, 59787, 79059, 87381, 98553, 126217, 162279, 184471, 237177, 295659, 342589, 378651, 553413, 1027767, 1135953, 1660239, 2398123, 3083301, 7194369, 21583107]

約数ペア:

[(1, 21583107), (3, 7194369), (7, 3083301), (9, 2398123), (13, 1660239), (19, 1135953), (21, 1027767), (39, 553413), (57, 378651), (63, 342589), (73, 295659), (91, 237177), (117, 184471), (133, 162279), (171, 126217), (219, 98553), (247, 87381), (273, 79059), (361, 59787), (399, 54093), (511, 42237), (657, 32851), (741, 29127), (819, 26353), (949, 22743), (1083, 19929), (1197, 18031), (1387, 15561), (1533, 14079), (1729, 12483), (2223, 9709), (2527, 8541), (2847, 7581), (3249, 6643), (4161, 5187), (4599, 4693)]