19755920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5743}}^1$

素因数の和:5799

約数の個数: 40

約数和(自身を含む): 47008896

約数和(自身を除く): 27252976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5743, 11486, 22972, 28715, 45944, 57430, 91888, 114860, 229720, 246949, 459440, 493898, 987796, 1234745, 1975592, 2469490, 3951184, 4938980, 9877960, 19755920]

約数ペア:

[(1, 19755920), (2, 9877960), (4, 4938980), (5, 3951184), (8, 2469490), (10, 1975592), (16, 1234745), (20, 987796), (40, 493898), (43, 459440), (80, 246949), (86, 229720), (172, 114860), (215, 91888), (344, 57430), (430, 45944), (688, 28715), (860, 22972), (1720, 11486), (3440, 5743)]