13985320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 33073920

約数和(自身を除く): 19088600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 47, 86, 94, 172, 173, 188, 215, 235, 344, 346, 376, 430, 470, 692, 860, 865, 940, 1384, 1720, 1730, 1880, 2021, 3460, 4042, 6920, 7439, 8084, 8131, 10105, 14878, 16168, 16262, 20210, 29756, 32524, 37195, 40420, 40655, 59512, 65048, 74390, 80840, 81310, 148780, 162620, 297560, 325240, 349633, 699266, 1398532, 1748165, 2797064, 3496330, 6992660, 13985320]

約数ペア:

[(1, 13985320), (2, 6992660), (4, 3496330), (5, 2797064), (8, 1748165), (10, 1398532), (20, 699266), (40, 349633), (43, 325240), (47, 297560), (86, 162620), (94, 148780), (172, 81310), (173, 80840), (188, 74390), (215, 65048), (235, 59512), (344, 40655), (346, 40420), (376, 37195), (430, 32524), (470, 29756), (692, 20210), (860, 16262), (865, 16168), (940, 14878), (1384, 10105), (1720, 8131), (1730, 8084), (1880, 7439), (2021, 6920), (3460, 4042)]