127215680

素因数分解:

$2^6\times 5^1\times {\mathrm{397549}}^1$

素因数の和:397566

約数の個数: 28

約数和(自身を含む): 302933100

約数和(自身を除く): 175717420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 397549, 795098, 1590196, 1987745, 3180392, 3975490, 6360784, 7950980, 12721568, 15901960, 25443136, 31803920, 63607840, 127215680]

約数ペア:

[(1, 127215680), (2, 63607840), (4, 31803920), (5, 25443136), (8, 15901960), (10, 12721568), (16, 7950980), (20, 6360784), (32, 3975490), (40, 3180392), (64, 1987745), (80, 1590196), (160, 795098), (320, 397549)]