203314280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{390989}}^1$

素因数の和:391013

約数の個数: 32

約数和(自身を含む): 492647400

約数和(自身を除く): 289333120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 390989, 781978, 1563956, 1954945, 3127912, 3909890, 5082857, 7819780, 10165714, 15639560, 20331428, 25414285, 40662856, 50828570, 101657140, 203314280]

約数ペア:

[(1, 203314280), (2, 101657140), (4, 50828570), (5, 40662856), (8, 25414285), (10, 20331428), (13, 15639560), (20, 10165714), (26, 7819780), (40, 5082857), (52, 3909890), (65, 3127912), (104, 1954945), (130, 1563956), (260, 781978), (520, 390989)]