20125712

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{277}}^1$

素因数の和:543

約数の個数: 40

約数和(自身を含む): 41366400

約数和(自身を除く): 21240688

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 239, 277, 304, 478, 554, 956, 1108, 1912, 2216, 3824, 4432, 4541, 5263, 9082, 10526, 18164, 21052, 36328, 42104, 66203, 72656, 84208, 132406, 264812, 529624, 1059248, 1257857, 2515714, 5031428, 10062856, 20125712]

約数ペア:

[(1, 20125712), (2, 10062856), (4, 5031428), (8, 2515714), (16, 1257857), (19, 1059248), (38, 529624), (76, 264812), (152, 132406), (239, 84208), (277, 72656), (304, 66203), (478, 42104), (554, 36328), (956, 21052), (1108, 18164), (1912, 10526), (2216, 9082), (3824, 5263), (4432, 4541)]