123342920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71711}}^1$

素因数の和:71765

約数の個数: 32

約数和(自身を含む): 283979520

約数和(自身を除く): 160636600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 71711, 143422, 286844, 358555, 573688, 717110, 1434220, 2868440, 3083573, 6167146, 12334292, 15417865, 24668584, 30835730, 61671460, 123342920]

約数ペア:

[(1, 123342920), (2, 61671460), (4, 30835730), (5, 24668584), (8, 15417865), (10, 12334292), (20, 6167146), (40, 3083573), (43, 2868440), (86, 1434220), (172, 717110), (215, 573688), (344, 358555), (430, 286844), (860, 143422), (1720, 71711)]