18990244

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:317

約数の個数: 72

約数和(自身を含む): 43235640

約数和(自身を除く): 24245396

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 29, 49, 52, 58, 91, 98, 116, 182, 196, 203, 257, 364, 377, 406, 514, 637, 754, 812, 1028, 1274, 1421, 1508, 1799, 2548, 2639, 2842, 3341, 3598, 5278, 5684, 6682, 7196, 7453, 10556, 12593, 13364, 14906, 18473, 23387, 25186, 29812, 36946, 46774, 50372, 52171, 73892, 93548, 96889, 104342, 163709, 193778, 208684, 327418, 365197, 387556, 654836, 678223, 730394, 1356446, 1460788, 2712892, 4747561, 9495122, 18990244]

約数ペア:

[(1, 18990244), (2, 9495122), (4, 4747561), (7, 2712892), (13, 1460788), (14, 1356446), (26, 730394), (28, 678223), (29, 654836), (49, 387556), (52, 365197), (58, 327418), (91, 208684), (98, 193778), (116, 163709), (182, 104342), (196, 96889), (203, 93548), (257, 73892), (364, 52171), (377, 50372), (406, 46774), (514, 36946), (637, 29812), (754, 25186), (812, 23387), (1028, 18473), (1274, 14906), (1421, 13364), (1508, 12593), (1799, 10556), (2548, 7453), (2639, 7196), (2842, 6682), (3341, 5684), (3598, 5278)]