99991640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1973}}^1$

素因数の和:2172

約数の個数: 64

約数和(自身を含む): 258672960

約数和(自身を除く): 158681320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 181, 280, 362, 724, 905, 1267, 1448, 1810, 1973, 2534, 3620, 3946, 5068, 6335, 7240, 7892, 9865, 10136, 12670, 13811, 15784, 19730, 25340, 27622, 39460, 50680, 55244, 69055, 78920, 110488, 138110, 276220, 357113, 552440, 714226, 1428452, 1785565, 2499791, 2856904, 3571130, 4999582, 7142260, 9999164, 12498955, 14284520, 19998328, 24997910, 49995820, 99991640]

約数ペア:

[(1, 99991640), (2, 49995820), (4, 24997910), (5, 19998328), (7, 14284520), (8, 12498955), (10, 9999164), (14, 7142260), (20, 4999582), (28, 3571130), (35, 2856904), (40, 2499791), (56, 1785565), (70, 1428452), (140, 714226), (181, 552440), (280, 357113), (362, 276220), (724, 138110), (905, 110488), (1267, 78920), (1448, 69055), (1810, 55244), (1973, 50680), (2534, 39460), (3620, 27622), (3946, 25340), (5068, 19730), (6335, 15784), (7240, 13811), (7892, 12670), (9865, 10136)]