128236480

素因数分解:

$2^6\times 5^1\times {\mathrm{400739}}^1$

素因数の和:400756

約数の個数: 28

約数和(自身を含む): 305363880

約数和(自身を除く): 177127400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 400739, 801478, 1602956, 2003695, 3205912, 4007390, 6411824, 8014780, 12823648, 16029560, 25647296, 32059120, 64118240, 128236480]

約数ペア:

[(1, 128236480), (2, 64118240), (4, 32059120), (5, 25647296), (8, 16029560), (10, 12823648), (16, 8014780), (20, 6411824), (32, 4007390), (40, 3205912), (64, 2003695), (80, 1602956), (160, 801478), (320, 400739)]