2991280

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:421

約数の個数: 40

約数和(自身を含む): 7030800

約数和(自身を除く): 4039520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 269, 278, 538, 556, 695, 1076, 1112, 1345, 1390, 2152, 2224, 2690, 2780, 4304, 5380, 5560, 10760, 11120, 21520, 37391, 74782, 149564, 186955, 299128, 373910, 598256, 747820, 1495640, 2991280]

約数ペア:

[(1, 2991280), (2, 1495640), (4, 747820), (5, 598256), (8, 373910), (10, 299128), (16, 186955), (20, 149564), (40, 74782), (80, 37391), (139, 21520), (269, 11120), (278, 10760), (538, 5560), (556, 5380), (695, 4304), (1076, 2780), (1112, 2690), (1345, 2224), (1390, 2152)]