20777760

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:375

約数の個数: 144

約数和(自身を含む): 72648576

約数和(自身を除く): 51870816

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 47, 48, 60, 72, 80, 90, 94, 96, 120, 141, 144, 160, 180, 188, 235, 240, 282, 288, 307, 360, 376, 423, 470, 480, 564, 614, 705, 720, 752, 846, 921, 940, 1128, 1228, 1410, 1440, 1504, 1535, 1692, 1842, 1880, 2115, 2256, 2456, 2763, 2820, 3070, 3384, 3684, 3760, 4230, 4512, 4605, 4912, 5526, 5640, 6140, 6768, 7368, 7520, 8460, 9210, 9824, 11052, 11280, 12280, 13536, 13815, 14429, 14736, 16920, 18420, 22104, 22560, 24560, 27630, 28858, 29472, 33840, 36840, 43287, 44208, 49120, 55260, 57716, 67680, 72145, 73680, 86574, 88416, 110520, 115432, 129861, 144290, 147360, 173148, 216435, 221040, 230864, 259722, 288580, 346296, 432870, 442080, 461728, 519444, 577160, 649305, 692592, 865740, 1038888, 1154320, 1298610, 1385184, 1731480, 2077776, 2308640, 2597220, 3462960, 4155552, 5194440, 6925920, 10388880, 20777760]

約数ペア:

[(1, 20777760), (2, 10388880), (3, 6925920), (4, 5194440), (5, 4155552), (6, 3462960), (8, 2597220), (9, 2308640), (10, 2077776), (12, 1731480), (15, 1385184), (16, 1298610), (18, 1154320), (20, 1038888), (24, 865740), (30, 692592), (32, 649305), (36, 577160), (40, 519444), (45, 461728), (47, 442080), (48, 432870), (60, 346296), (72, 288580), (80, 259722), (90, 230864), (94, 221040), (96, 216435), (120, 173148), (141, 147360), (144, 144290), (160, 129861), (180, 115432), (188, 110520), (235, 88416), (240, 86574), (282, 73680), (288, 72145), (307, 67680), (360, 57716), (376, 55260), (423, 49120), (470, 44208), (480, 43287), (564, 36840), (614, 33840), (705, 29472), (720, 28858), (752, 27630), (846, 24560), (921, 22560), (940, 22104), (1128, 18420), (1228, 16920), (1410, 14736), (1440, 14429), (1504, 13815), (1535, 13536), (1692, 12280), (1842, 11280), (1880, 11052), (2115, 9824), (2256, 9210), (2456, 8460), (2763, 7520), (2820, 7368), (3070, 6768), (3384, 6140), (3684, 5640), (3760, 5526), (4230, 4912), (4512, 4605)]