80518720

素因数分解:

$2^6\times 5^1\times {\mathrm{251621}}^1$

素因数の和:251638

約数の個数: 28

約数和(自身を含む): 191735964

約数和(自身を除く): 111217244

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 251621, 503242, 1006484, 1258105, 2012968, 2516210, 4025936, 5032420, 8051872, 10064840, 16103744, 20129680, 40259360, 80518720]

約数ペア:

[(1, 80518720), (2, 40259360), (4, 20129680), (5, 16103744), (8, 10064840), (10, 8051872), (16, 5032420), (20, 4025936), (32, 2516210), (40, 2012968), (64, 1258105), (80, 1006484), (160, 503242), (320, 251621)]