278758840

素因数分解:

$2^3\times 5^1\times {\mathrm{479}}^1\times {\mathrm{14549}}^1$

素因数の和:15039

約数の個数: 32

約数和(自身を含む): 628560000

約数和(自身を除く): 349801160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 479, 958, 1916, 2395, 3832, 4790, 9580, 14549, 19160, 29098, 58196, 72745, 116392, 145490, 290980, 581960, 6968971, 13937942, 27875884, 34844855, 55751768, 69689710, 139379420, 278758840]

約数ペア:

[(1, 278758840), (2, 139379420), (4, 69689710), (5, 55751768), (8, 34844855), (10, 27875884), (20, 13937942), (40, 6968971), (479, 581960), (958, 290980), (1916, 145490), (2395, 116392), (3832, 72745), (4790, 58196), (9580, 29098), (14549, 19160)]