21505236487

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{200573}}^1$

素因数の和:200667

約数の個数: 24

約数和(自身を含む): 26600926176

約数和(自身を除く): 5095689689

約数列:

[1, 7, 17, 53, 119, 289, 371, 901, 2023, 6307, 15317, 107219, 200573, 1404011, 3409741, 10630369, 23868187, 57965597, 74412583, 180716273, 405759179, 1265013911, 3072176641, 21505236487]

約数ペア:

[(1, 21505236487), (7, 3072176641), (17, 1265013911), (53, 405759179), (119, 180716273), (289, 74412583), (371, 57965597), (901, 23868187), (2023, 10630369), (6307, 3409741), (15317, 1404011), (107219, 200573)]