31322920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18211}}^1$

素因数の和:18265

約数の個数: 32

約数和(自身を含む): 72119520

約数和(自身を除く): 40796600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 18211, 36422, 72844, 91055, 145688, 182110, 364220, 728440, 783073, 1566146, 3132292, 3915365, 6264584, 7830730, 15661460, 31322920]

約数ペア:

[(1, 31322920), (2, 15661460), (4, 7830730), (5, 6264584), (8, 3915365), (10, 3132292), (20, 1566146), (40, 783073), (43, 728440), (86, 364220), (172, 182110), (215, 145688), (344, 91055), (430, 72844), (860, 36422), (1720, 18211)]