20801664

素因数分解:

$2^7\times 3^3\times {\mathrm{13}}^1\times {\mathrm{463}}^1$

素因数の和:499

約数の個数: 128

約数和(自身を含む): 66259200

約数和(自身を除く): 45457536

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 32, 36, 39, 48, 52, 54, 64, 72, 78, 96, 104, 108, 117, 128, 144, 156, 192, 208, 216, 234, 288, 312, 351, 384, 416, 432, 463, 468, 576, 624, 702, 832, 864, 926, 936, 1152, 1248, 1389, 1404, 1664, 1728, 1852, 1872, 2496, 2778, 2808, 3456, 3704, 3744, 4167, 4992, 5556, 5616, 6019, 7408, 7488, 8334, 11112, 11232, 12038, 12501, 14816, 14976, 16668, 18057, 22224, 22464, 24076, 25002, 29632, 33336, 36114, 44448, 44928, 48152, 50004, 54171, 59264, 66672, 72228, 88896, 96304, 100008, 108342, 133344, 144456, 162513, 177792, 192608, 200016, 216684, 266688, 288912, 325026, 385216, 400032, 433368, 533376, 577824, 650052, 770432, 800064, 866736, 1155648, 1300104, 1600128, 1733472, 2311296, 2600208, 3466944, 5200416, 6933888, 10400832, 20801664]

約数ペア:

[(1, 20801664), (2, 10400832), (3, 6933888), (4, 5200416), (6, 3466944), (8, 2600208), (9, 2311296), (12, 1733472), (13, 1600128), (16, 1300104), (18, 1155648), (24, 866736), (26, 800064), (27, 770432), (32, 650052), (36, 577824), (39, 533376), (48, 433368), (52, 400032), (54, 385216), (64, 325026), (72, 288912), (78, 266688), (96, 216684), (104, 200016), (108, 192608), (117, 177792), (128, 162513), (144, 144456), (156, 133344), (192, 108342), (208, 100008), (216, 96304), (234, 88896), (288, 72228), (312, 66672), (351, 59264), (384, 54171), (416, 50004), (432, 48152), (463, 44928), (468, 44448), (576, 36114), (624, 33336), (702, 29632), (832, 25002), (864, 24076), (926, 22464), (936, 22224), (1152, 18057), (1248, 16668), (1389, 14976), (1404, 14816), (1664, 12501), (1728, 12038), (1852, 11232), (1872, 11112), (2496, 8334), (2778, 7488), (2808, 7408), (3456, 6019), (3704, 5616), (3744, 5556), (4167, 4992)]