721345040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{693601}}^1$

素因数の和:693627

約数の個数: 40

約数和(自身を含む): 1806139608

約数和(自身を除く): 1084794568

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 693601, 1387202, 2774404, 3468005, 5548808, 6936010, 9016813, 11097616, 13872020, 18033626, 27744040, 36067252, 45084065, 55488080, 72134504, 90168130, 144269008, 180336260, 360672520, 721345040]

約数ペア:

[(1, 721345040), (2, 360672520), (4, 180336260), (5, 144269008), (8, 90168130), (10, 72134504), (13, 55488080), (16, 45084065), (20, 36067252), (26, 27744040), (40, 18033626), (52, 13872020), (65, 11097616), (80, 9016813), (104, 6936010), (130, 5548808), (208, 3468005), (260, 2774404), (520, 1387202), (1040, 693601)]