20016728

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 41148000

約数和(自身を除く): 21131272

約数列:

[1, 2, 4, 8, 19, 29, 38, 58, 76, 116, 152, 232, 239, 361, 478, 551, 722, 956, 1102, 1444, 1912, 2204, 2888, 4408, 4541, 6931, 9082, 10469, 13862, 18164, 20938, 27724, 36328, 41876, 55448, 83752, 86279, 131689, 172558, 263378, 345116, 526756, 690232, 1053512, 2502091, 5004182, 10008364, 20016728]

約数ペア:

[(1, 20016728), (2, 10008364), (4, 5004182), (8, 2502091), (19, 1053512), (29, 690232), (38, 526756), (58, 345116), (76, 263378), (116, 172558), (152, 131689), (232, 86279), (239, 83752), (361, 55448), (478, 41876), (551, 36328), (722, 27724), (956, 20938), (1102, 18164), (1444, 13862), (1912, 10469), (2204, 9082), (2888, 6931), (4408, 4541)]