31838920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{173}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 74416320

約数和(自身を除く): 42577400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 107, 172, 173, 214, 215, 344, 346, 428, 430, 535, 692, 856, 860, 865, 1070, 1384, 1720, 1730, 2140, 3460, 4280, 4601, 6920, 7439, 9202, 14878, 18404, 18511, 23005, 29756, 36808, 37022, 37195, 46010, 59512, 74044, 74390, 92020, 92555, 148088, 148780, 184040, 185110, 297560, 370220, 740440, 795973, 1591946, 3183892, 3979865, 6367784, 7959730, 15919460, 31838920]

約数ペア:

[(1, 31838920), (2, 15919460), (4, 7959730), (5, 6367784), (8, 3979865), (10, 3183892), (20, 1591946), (40, 795973), (43, 740440), (86, 370220), (107, 297560), (172, 185110), (173, 184040), (214, 148780), (215, 148088), (344, 92555), (346, 92020), (428, 74390), (430, 74044), (535, 59512), (692, 46010), (856, 37195), (860, 37022), (865, 36808), (1070, 29756), (1384, 23005), (1720, 18511), (1730, 18404), (2140, 14878), (3460, 9202), (4280, 7439), (4601, 6920)]