149478920

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{21601}}^1$

素因数の和:21785

約数の個数: 32

約数和(自身を含む): 338287320

約数和(自身を除く): 188808400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 21601, 43202, 86404, 108005, 172808, 216010, 432020, 864040, 3736973, 7473946, 14947892, 18684865, 29895784, 37369730, 74739460, 149478920]

約数ペア:

[(1, 149478920), (2, 74739460), (4, 37369730), (5, 29895784), (8, 18684865), (10, 14947892), (20, 7473946), (40, 3736973), (173, 864040), (346, 432020), (692, 216010), (865, 172808), (1384, 108005), (1730, 86404), (3460, 43202), (6920, 21601)]