78907420

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{26479}}^1$

素因数の和:26637

約数の個数: 24

約数和(自身を含む): 166824000

約数和(自身を除く): 87916580

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 26479, 52958, 105916, 132395, 264790, 529580, 3945371, 7890742, 15781484, 19726855, 39453710, 78907420]

約数ペア:

[(1, 78907420), (2, 39453710), (4, 19726855), (5, 15781484), (10, 7890742), (20, 3945371), (149, 529580), (298, 264790), (596, 132395), (745, 105916), (1490, 52958), (2980, 26479)]