18248840

素因数分解:

$2^3\times 5^1\times {\mathrm{503}}^1\times {\mathrm{907}}^1$

素因数の和:1421

約数の個数: 32

約数和(自身を含む): 41186880

約数和(自身を除く): 22938040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503, 907, 1006, 1814, 2012, 2515, 3628, 4024, 4535, 5030, 7256, 9070, 10060, 18140, 20120, 36280, 456221, 912442, 1824884, 2281105, 3649768, 4562210, 9124420, 18248840]

約数ペア:

[(1, 18248840), (2, 9124420), (4, 4562210), (5, 3649768), (8, 2281105), (10, 1824884), (20, 912442), (40, 456221), (503, 36280), (907, 20120), (1006, 18140), (1814, 10060), (2012, 9070), (2515, 7256), (3628, 5030), (4024, 4535)]