20199705575

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{399401}}^1$

素因数の和:399452

約数の個数: 36

約数和(自身を含む): 30408870672

約数和(自身を除く): 10209165097

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 289, 425, 595, 1445, 2023, 2975, 7225, 10115, 50575, 399401, 1997005, 2795807, 6789817, 9985025, 13979035, 33949085, 47528719, 69895175, 115426889, 169745425, 237643595, 577134445, 807988223, 1188217975, 2885672225, 4039941115, 20199705575]

約数ペア:

[(1, 20199705575), (5, 4039941115), (7, 2885672225), (17, 1188217975), (25, 807988223), (35, 577134445), (85, 237643595), (119, 169745425), (175, 115426889), (289, 69895175), (425, 47528719), (595, 33949085), (1445, 13979035), (2023, 9985025), (2975, 6789817), (7225, 2795807), (10115, 1997005), (50575, 399401)]