815392640

素因数分解:

$2^7\times 5^1\times {\mathrm{1274051}}^1$

素因数の和:1274070

約数の個数: 32

約数和(自身を含む): 1949299560

約数和(自身を除く): 1133906920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1274051, 2548102, 5096204, 6370255, 10192408, 12740510, 20384816, 25481020, 40769632, 50962040, 81539264, 101924080, 163078528, 203848160, 407696320, 815392640]

約数ペア:

[(1, 815392640), (2, 407696320), (4, 203848160), (5, 163078528), (8, 101924080), (10, 81539264), (16, 50962040), (20, 40769632), (32, 25481020), (40, 20384816), (64, 12740510), (80, 10192408), (128, 6370255), (160, 5096204), (320, 2548102), (640, 1274051)]