20324725

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:381

約数の個数: 24

約数和(自身を含む): 26248320

約数和(自身を除く): 5923595

約数列:

[1, 5, 25, 41, 79, 205, 251, 395, 1025, 1255, 1975, 3239, 6275, 10291, 16195, 19829, 51455, 80975, 99145, 257275, 495725, 812989, 4064945, 20324725]

約数ペア:

[(1, 20324725), (5, 4064945), (25, 812989), (41, 495725), (79, 257275), (205, 99145), (251, 80975), (395, 51455), (1025, 19829), (1255, 16195), (1975, 10291), (3239, 6275)]