19981675

素因数分解:

$5^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{503}}^1$

素因数の和:747

約数の個数: 24

約数和(自身を含む): 28498176

約数和(自身を除く): 8516501

約数列:

[1, 5, 7, 25, 35, 175, 227, 503, 1135, 1589, 2515, 3521, 5675, 7945, 12575, 17605, 39725, 88025, 114181, 570905, 799267, 2854525, 3996335, 19981675]

約数ペア:

[(1, 19981675), (5, 3996335), (7, 2854525), (25, 799267), (35, 570905), (175, 114181), (227, 88025), (503, 39725), (1135, 17605), (1589, 12575), (2515, 7945), (3521, 5675)]