28004525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{503}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 37122624

約数和(自身を除く): 9118099

約数列:

[1, 5, 17, 25, 85, 131, 425, 503, 655, 2227, 2515, 3275, 8551, 11135, 12575, 42755, 55675, 65893, 213775, 329465, 1120181, 1647325, 5600905, 28004525]

約数ペア:

[(1, 28004525), (5, 5600905), (17, 1647325), (25, 1120181), (85, 329465), (131, 213775), (425, 65893), (503, 55675), (655, 42755), (2227, 12575), (2515, 11135), (3275, 8551)]