19713920

素因数分解:

$2^7\times 5^1\times {\mathrm{30803}}^1$

素因数の和:30822

約数の個数: 32

約数和(自身を含む): 47130120

約数和(自身を除く): 27416200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 30803, 61606, 123212, 154015, 246424, 308030, 492848, 616060, 985696, 1232120, 1971392, 2464240, 3942784, 4928480, 9856960, 19713920]

約数ペア:

[(1, 19713920), (2, 9856960), (4, 4928480), (5, 3942784), (8, 2464240), (10, 1971392), (16, 1232120), (20, 985696), (32, 616060), (40, 492848), (64, 308030), (80, 246424), (128, 154015), (160, 123212), (320, 61606), (640, 30803)]