19997712

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1$

素因数の和:430

約数の個数: 160

約数和(自身を含む): 69638400

約数和(自身を除く): 49640688

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 17, 18, 21, 24, 27, 28, 34, 36, 42, 48, 51, 54, 56, 63, 68, 72, 84, 102, 108, 112, 119, 126, 136, 144, 153, 168, 189, 204, 216, 238, 252, 272, 306, 336, 357, 378, 389, 408, 432, 459, 476, 504, 612, 714, 756, 778, 816, 918, 952, 1008, 1071, 1167, 1224, 1428, 1512, 1556, 1836, 1904, 2142, 2334, 2448, 2723, 2856, 3024, 3112, 3213, 3501, 3672, 4284, 4668, 5446, 5712, 6224, 6426, 6613, 7002, 7344, 8169, 8568, 9336, 10503, 10892, 12852, 13226, 14004, 16338, 17136, 18672, 19839, 21006, 21784, 24507, 25704, 26452, 28008, 32676, 39678, 42012, 43568, 46291, 49014, 51408, 52904, 56016, 59517, 65352, 73521, 79356, 84024, 92582, 98028, 105808, 119034, 130704, 138873, 147042, 158712, 168048, 178551, 185164, 196056, 238068, 277746, 294084, 317424, 357102, 370328, 392112, 416619, 476136, 555492, 588168, 714204, 740656, 833238, 952272, 1110984, 1176336, 1249857, 1428408, 1666476, 2221968, 2499714, 2856816, 3332952, 4999428, 6665904, 9998856, 19997712]

約数ペア:

[(1, 19997712), (2, 9998856), (3, 6665904), (4, 4999428), (6, 3332952), (7, 2856816), (8, 2499714), (9, 2221968), (12, 1666476), (14, 1428408), (16, 1249857), (17, 1176336), (18, 1110984), (21, 952272), (24, 833238), (27, 740656), (28, 714204), (34, 588168), (36, 555492), (42, 476136), (48, 416619), (51, 392112), (54, 370328), (56, 357102), (63, 317424), (68, 294084), (72, 277746), (84, 238068), (102, 196056), (108, 185164), (112, 178551), (119, 168048), (126, 158712), (136, 147042), (144, 138873), (153, 130704), (168, 119034), (189, 105808), (204, 98028), (216, 92582), (238, 84024), (252, 79356), (272, 73521), (306, 65352), (336, 59517), (357, 56016), (378, 52904), (389, 51408), (408, 49014), (432, 46291), (459, 43568), (476, 42012), (504, 39678), (612, 32676), (714, 28008), (756, 26452), (778, 25704), (816, 24507), (918, 21784), (952, 21006), (1008, 19839), (1071, 18672), (1167, 17136), (1224, 16338), (1428, 14004), (1512, 13226), (1556, 12852), (1836, 10892), (1904, 10503), (2142, 9336), (2334, 8568), (2448, 8169), (2723, 7344), (2856, 7002), (3024, 6613), (3112, 6426), (3213, 6224), (3501, 5712), (3672, 5446), (4284, 4668)]