39988025

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{20773}}^1$

素因数の和:20801

約数の個数: 24

約数和(自身を含む): 61823424

約数和(自身を除く): 21835399

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 20773, 103865, 145411, 228503, 519325, 727055, 1142515, 1599521, 3635275, 5712575, 7997605, 39988025]

約数ペア:

[(1, 39988025), (5, 7997605), (7, 5712575), (11, 3635275), (25, 1599521), (35, 1142515), (55, 727055), (77, 519325), (175, 228503), (275, 145411), (385, 103865), (1925, 20773)]