20511072

素因数分解:

$2^5\times 3^2\times {\mathrm{229}}^1\times {\mathrm{311}}^1$

素因数の和:556

約数の個数: 72

約数和(自身を含む): 58771440

約数和(自身を除く): 38260368

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 229, 288, 311, 458, 622, 687, 916, 933, 1244, 1374, 1832, 1866, 2061, 2488, 2748, 2799, 3664, 3732, 4122, 4976, 5496, 5598, 7328, 7464, 8244, 9952, 10992, 11196, 14928, 16488, 21984, 22392, 29856, 32976, 44784, 65952, 71219, 89568, 142438, 213657, 284876, 427314, 569752, 640971, 854628, 1139504, 1281942, 1709256, 2279008, 2563884, 3418512, 5127768, 6837024, 10255536, 20511072]

約数ペア:

[(1, 20511072), (2, 10255536), (3, 6837024), (4, 5127768), (6, 3418512), (8, 2563884), (9, 2279008), (12, 1709256), (16, 1281942), (18, 1139504), (24, 854628), (32, 640971), (36, 569752), (48, 427314), (72, 284876), (96, 213657), (144, 142438), (229, 89568), (288, 71219), (311, 65952), (458, 44784), (622, 32976), (687, 29856), (916, 22392), (933, 21984), (1244, 16488), (1374, 14928), (1832, 11196), (1866, 10992), (2061, 9952), (2488, 8244), (2748, 7464), (2799, 7328), (3664, 5598), (3732, 5496), (4122, 4976)]