20408090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2903}}^1$

素因数の和:2966

約数の個数: 32

約数和(自身を含む): 39726720

約数和(自身を除く): 19318630

約数列:

[1, 2, 5, 10, 19, 37, 38, 74, 95, 185, 190, 370, 703, 1406, 2903, 3515, 5806, 7030, 14515, 29030, 55157, 107411, 110314, 214822, 275785, 537055, 551570, 1074110, 2040809, 4081618, 10204045, 20408090]

約数ペア:

[(1, 20408090), (2, 10204045), (5, 4081618), (10, 2040809), (19, 1074110), (37, 551570), (38, 537055), (74, 275785), (95, 214822), (185, 110314), (190, 107411), (370, 55157), (703, 29030), (1406, 14515), (2903, 7030), (3515, 5806)]