19502005

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{1487}}^1$

素因数の和:1596

約数の個数: 16

約数和(自身を含む): 24355584

約数和(自身を除く): 4853579

約数列:

[1, 5, 43, 61, 215, 305, 1487, 2623, 7435, 13115, 63941, 90707, 319705, 453535, 3900401, 19502005]

約数ペア:

[(1, 19502005), (5, 3900401), (43, 453535), (61, 319705), (215, 90707), (305, 63941), (1487, 13115), (2623, 7435)]