20112992

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 41513472

約数和(自身を除く): 21400480

約数列:

[1, 2, 4, 8, 16, 32, 43, 47, 86, 94, 172, 188, 311, 344, 376, 622, 688, 752, 1244, 1376, 1504, 2021, 2488, 4042, 4976, 8084, 9952, 13373, 14617, 16168, 26746, 29234, 32336, 53492, 58468, 64672, 106984, 116936, 213968, 233872, 427936, 467744, 628531, 1257062, 2514124, 5028248, 10056496, 20112992]

約数ペア:

[(1, 20112992), (2, 10056496), (4, 5028248), (8, 2514124), (16, 1257062), (32, 628531), (43, 467744), (47, 427936), (86, 233872), (94, 213968), (172, 116936), (188, 106984), (311, 64672), (344, 58468), (376, 53492), (622, 32336), (688, 29234), (752, 26746), (1244, 16168), (1376, 14617), (1504, 13373), (2021, 9952), (2488, 8084), (4042, 4976)]