78898960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{140891}}^1$

素因数の和:140911

約数の個数: 40

約数和(自身を含む): 209647296

約数和(自身を除く): 130748336

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 140891, 281782, 563564, 704455, 986237, 1127128, 1408910, 1972474, 2254256, 2817820, 3944948, 4931185, 5635640, 7889896, 9862370, 11271280, 15779792, 19724740, 39449480, 78898960]

約数ペア:

[(1, 78898960), (2, 39449480), (4, 19724740), (5, 15779792), (7, 11271280), (8, 9862370), (10, 7889896), (14, 5635640), (16, 4931185), (20, 3944948), (28, 2817820), (35, 2254256), (40, 1972474), (56, 1408910), (70, 1127128), (80, 986237), (112, 704455), (140, 563564), (280, 281782), (560, 140891)]