18884005

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 27705600

約数和(自身を除く): 8821595

約数列:

[1, 5, 7, 19, 35, 73, 95, 133, 365, 389, 511, 665, 1387, 1945, 2555, 2723, 6935, 7391, 9709, 13615, 28397, 36955, 48545, 51737, 141985, 198779, 258685, 539543, 993895, 2697715, 3776801, 18884005]

約数ペア:

[(1, 18884005), (5, 3776801), (7, 2697715), (19, 993895), (35, 539543), (73, 258685), (95, 198779), (133, 141985), (365, 51737), (389, 48545), (511, 36955), (665, 28397), (1387, 13615), (1945, 9709), (2555, 7391), (2723, 6935)]