18117760

素因数分解:

$2^7\times 5^1\times {\mathrm{28309}}^1$

素因数の和:28328

約数の個数: 32

約数和(自身を含む): 43314300

約数和(自身を除く): 25196540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 28309, 56618, 113236, 141545, 226472, 283090, 452944, 566180, 905888, 1132360, 1811776, 2264720, 3623552, 4529440, 9058880, 18117760]

約数ペア:

[(1, 18117760), (2, 9058880), (4, 4529440), (5, 3623552), (8, 2264720), (10, 1811776), (16, 1132360), (20, 905888), (32, 566180), (40, 452944), (64, 283090), (80, 226472), (128, 141545), (160, 113236), (320, 56618), (640, 28309)]