16655620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 36324288

約数和(自身を除く): 19668668

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 107, 172, 181, 214, 215, 362, 428, 430, 535, 724, 860, 905, 1070, 1810, 2140, 3620, 4601, 7783, 9202, 15566, 18404, 19367, 23005, 31132, 38734, 38915, 46010, 77468, 77830, 92020, 96835, 155660, 193670, 387340, 832781, 1665562, 3331124, 4163905, 8327810, 16655620]

約数ペア:

[(1, 16655620), (2, 8327810), (4, 4163905), (5, 3331124), (10, 1665562), (20, 832781), (43, 387340), (86, 193670), (107, 155660), (172, 96835), (181, 92020), (214, 77830), (215, 77468), (362, 46010), (428, 38915), (430, 38734), (535, 31132), (724, 23005), (860, 19367), (905, 18404), (1070, 15566), (1810, 9202), (2140, 7783), (3620, 4601)]