81475200640

素因数分解:

$2^7\times 5^1\times {\mathrm{127305001}}^1$

素因数の和:127305020

約数の個数: 32

約数和(自身を含む): 194776653060

約数和(自身を除く): 113301452420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127305001, 254610002, 509220004, 636525005, 1018440008, 1273050010, 2036880016, 2546100020, 4073760032, 5092200040, 8147520064, 10184400080, 16295040128, 20368800160, 40737600320, 81475200640]

約数ペア:

[(1, 81475200640), (2, 40737600320), (4, 20368800160), (5, 16295040128), (8, 10184400080), (10, 8147520064), (16, 5092200040), (20, 4073760032), (32, 2546100020), (40, 2036880016), (64, 1273050010), (80, 1018440008), (128, 636525005), (160, 509220004), (320, 254610002), (640, 127305001)]