20492816

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{233}}^1\times {\mathrm{239}}^1$

素因数の和:503

約数の個数: 40

約数和(自身を含む): 41783040

約数和(自身を除く): 21290224

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 233, 239, 368, 466, 478, 932, 956, 1864, 1912, 3728, 3824, 5359, 5497, 10718, 10994, 21436, 21988, 42872, 43976, 55687, 85744, 87952, 111374, 222748, 445496, 890992, 1280801, 2561602, 5123204, 10246408, 20492816]

約数ペア:

[(1, 20492816), (2, 10246408), (4, 5123204), (8, 2561602), (16, 1280801), (23, 890992), (46, 445496), (92, 222748), (184, 111374), (233, 87952), (239, 85744), (368, 55687), (466, 43976), (478, 42872), (932, 21988), (956, 21436), (1864, 10994), (1912, 10718), (3728, 5497), (3824, 5359)]