990510040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1904827}}^1$

素因数の和:1904851

約数の個数: 32

約数和(自身を含む): 2400083280

約数和(自身を除く): 1409573240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1904827, 3809654, 7619308, 9524135, 15238616, 19048270, 24762751, 38096540, 49525502, 76193080, 99051004, 123813755, 198102008, 247627510, 495255020, 990510040]

約数ペア:

[(1, 990510040), (2, 495255020), (4, 247627510), (5, 198102008), (8, 123813755), (10, 99051004), (13, 76193080), (20, 49525502), (26, 38096540), (40, 24762751), (52, 19048270), (65, 15238616), (104, 9524135), (130, 7619308), (260, 3809654), (520, 1904827)]