13176920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 31173120

約数和(自身を除く): 17996200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 47, 86, 94, 163, 172, 188, 215, 235, 326, 344, 376, 430, 470, 652, 815, 860, 940, 1304, 1630, 1720, 1880, 2021, 3260, 4042, 6520, 7009, 7661, 8084, 10105, 14018, 15322, 16168, 20210, 28036, 30644, 35045, 38305, 40420, 56072, 61288, 70090, 76610, 80840, 140180, 153220, 280360, 306440, 329423, 658846, 1317692, 1647115, 2635384, 3294230, 6588460, 13176920]

約数ペア:

[(1, 13176920), (2, 6588460), (4, 3294230), (5, 2635384), (8, 1647115), (10, 1317692), (20, 658846), (40, 329423), (43, 306440), (47, 280360), (86, 153220), (94, 140180), (163, 80840), (172, 76610), (188, 70090), (215, 61288), (235, 56072), (326, 40420), (344, 38305), (376, 35045), (430, 30644), (470, 28036), (652, 20210), (815, 16168), (860, 15322), (940, 14018), (1304, 10105), (1630, 8084), (1720, 7661), (1880, 7009), (2021, 6520), (3260, 4042)]