20010407720

素因数分解:

$2^3\times 5^1\times {\mathrm{3433}}^1\times {\mathrm{145721}}^1$

素因数の和:149165

約数の個数: 32

約数和(自身を含む): 45036841320

約数和(自身を除く): 25026433600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3433, 6866, 13732, 17165, 27464, 34330, 68660, 137320, 145721, 291442, 582884, 728605, 1165768, 1457210, 2914420, 5828840, 500260193, 1000520386, 2001040772, 2501300965, 4002081544, 5002601930, 10005203860, 20010407720]

約数ペア:

[(1, 20010407720), (2, 10005203860), (4, 5002601930), (5, 4002081544), (8, 2501300965), (10, 2001040772), (20, 1000520386), (40, 500260193), (3433, 5828840), (6866, 2914420), (13732, 1457210), (17165, 1165768), (27464, 728605), (34330, 582884), (68660, 291442), (137320, 145721)]