320728100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1811}}^1$

素因数の和:1866

約数の個数: 144

約数和(自身を含む): 905942016

約数和(自身を除く): 585213916

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 25, 28, 35, 44, 46, 50, 55, 70, 77, 92, 100, 110, 115, 140, 154, 161, 175, 220, 230, 253, 275, 308, 322, 350, 385, 460, 506, 550, 575, 644, 700, 770, 805, 1012, 1100, 1150, 1265, 1540, 1610, 1771, 1811, 1925, 2300, 2530, 3220, 3542, 3622, 3850, 4025, 5060, 6325, 7084, 7244, 7700, 8050, 8855, 9055, 12650, 12677, 16100, 17710, 18110, 19921, 25300, 25354, 35420, 36220, 39842, 41653, 44275, 45275, 50708, 63385, 79684, 83306, 88550, 90550, 99605, 126770, 139447, 166612, 177100, 181100, 199210, 208265, 253540, 278894, 291571, 316925, 398420, 416530, 458183, 498025, 557788, 583142, 633850, 697235, 833060, 916366, 996050, 1041325, 1166284, 1267700, 1394470, 1457855, 1832732, 1992100, 2082650, 2290915, 2788940, 2915710, 3207281, 3486175, 4165300, 4581830, 5831420, 6414562, 6972350, 7289275, 9163660, 11454575, 12829124, 13944700, 14578550, 16036405, 22909150, 29157100, 32072810, 45818300, 64145620, 80182025, 160364050, 320728100]

約数ペア:

[(1, 320728100), (2, 160364050), (4, 80182025), (5, 64145620), (7, 45818300), (10, 32072810), (11, 29157100), (14, 22909150), (20, 16036405), (22, 14578550), (23, 13944700), (25, 12829124), (28, 11454575), (35, 9163660), (44, 7289275), (46, 6972350), (50, 6414562), (55, 5831420), (70, 4581830), (77, 4165300), (92, 3486175), (100, 3207281), (110, 2915710), (115, 2788940), (140, 2290915), (154, 2082650), (161, 1992100), (175, 1832732), (220, 1457855), (230, 1394470), (253, 1267700), (275, 1166284), (308, 1041325), (322, 996050), (350, 916366), (385, 833060), (460, 697235), (506, 633850), (550, 583142), (575, 557788), (644, 498025), (700, 458183), (770, 416530), (805, 398420), (1012, 316925), (1100, 291571), (1150, 278894), (1265, 253540), (1540, 208265), (1610, 199210), (1771, 181100), (1811, 177100), (1925, 166612), (2300, 139447), (2530, 126770), (3220, 99605), (3542, 90550), (3622, 88550), (3850, 83306), (4025, 79684), (5060, 63385), (6325, 50708), (7084, 45275), (7244, 44275), (7700, 41653), (8050, 39842), (8855, 36220), (9055, 35420), (12650, 25354), (12677, 25300), (16100, 19921), (17710, 18110)]