81736120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47521}}^1$

素因数の和:47575

約数の個数: 32

約数和(自身を含む): 188187120

約数和(自身を除く): 106451000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 47521, 95042, 190084, 237605, 380168, 475210, 950420, 1900840, 2043403, 4086806, 8173612, 10217015, 16347224, 20434030, 40868060, 81736120]

約数ペア:

[(1, 81736120), (2, 40868060), (4, 20434030), (5, 16347224), (8, 10217015), (10, 8173612), (20, 4086806), (40, 2043403), (43, 1900840), (86, 950420), (172, 475210), (215, 380168), (344, 237605), (430, 190084), (860, 95042), (1720, 47521)]