257426820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10753}}^1$

素因数の和:10794

約数の個数: 144

約数和(自身を含む): 939469440

約数和(自身を除く): 682042620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 798, 855, 1140, 1197, 1260, 1330, 1596, 1710, 1995, 2394, 2660, 3420, 3990, 4788, 5985, 7980, 10753, 11970, 21506, 23940, 32259, 43012, 53765, 64518, 75271, 96777, 107530, 129036, 150542, 161295, 193554, 204307, 215060, 225813, 301084, 322590, 376355, 387108, 408614, 451626, 483885, 612921, 645180, 677439, 752710, 817228, 903252, 967770, 1021535, 1129065, 1225842, 1354878, 1430149, 1505420, 1838763, 1935540, 2043070, 2258130, 2451684, 2709756, 2860298, 3064605, 3387195, 3677526, 4086140, 4290447, 4516260, 5720596, 6129210, 6774390, 7150745, 7355052, 8580894, 9193815, 12258420, 12871341, 13548780, 14301490, 17161788, 18387630, 21452235, 25742682, 28602980, 36775260, 42904470, 51485364, 64356705, 85808940, 128713410, 257426820]

約数ペア:

[(1, 257426820), (2, 128713410), (3, 85808940), (4, 64356705), (5, 51485364), (6, 42904470), (7, 36775260), (9, 28602980), (10, 25742682), (12, 21452235), (14, 18387630), (15, 17161788), (18, 14301490), (19, 13548780), (20, 12871341), (21, 12258420), (28, 9193815), (30, 8580894), (35, 7355052), (36, 7150745), (38, 6774390), (42, 6129210), (45, 5720596), (57, 4516260), (60, 4290447), (63, 4086140), (70, 3677526), (76, 3387195), (84, 3064605), (90, 2860298), (95, 2709756), (105, 2451684), (114, 2258130), (126, 2043070), (133, 1935540), (140, 1838763), (171, 1505420), (180, 1430149), (190, 1354878), (210, 1225842), (228, 1129065), (252, 1021535), (266, 967770), (285, 903252), (315, 817228), (342, 752710), (380, 677439), (399, 645180), (420, 612921), (532, 483885), (570, 451626), (630, 408614), (665, 387108), (684, 376355), (798, 322590), (855, 301084), (1140, 225813), (1197, 215060), (1260, 204307), (1330, 193554), (1596, 161295), (1710, 150542), (1995, 129036), (2394, 107530), (2660, 96777), (3420, 75271), (3990, 64518), (4788, 53765), (5985, 43012), (7980, 32259), (10753, 23940), (11970, 21506)]