199972479

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{80021}}^1$

素因数の和:80055

約数の個数: 24

約数和(自身を含む): 328410288

約数和(自身を除く): 128437809

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 80021, 240063, 560147, 1360357, 1680441, 3921029, 4081071, 9522499, 11763087, 28567497, 66657493, 199972479]

約数ペア:

[(1, 199972479), (3, 66657493), (7, 28567497), (17, 11763087), (21, 9522499), (49, 4081071), (51, 3921029), (119, 1680441), (147, 1360357), (357, 560147), (833, 240063), (2499, 80021)]