18490280

素因数分解:

$2^3\times 5^1\times {\mathrm{503}}^1\times {\mathrm{919}}^1$

素因数の和:1433

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 23240920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503, 919, 1006, 1838, 2012, 2515, 3676, 4024, 4595, 5030, 7352, 9190, 10060, 18380, 20120, 36760, 462257, 924514, 1849028, 2311285, 3698056, 4622570, 9245140, 18490280]

約数ペア:

[(1, 18490280), (2, 9245140), (4, 4622570), (5, 3698056), (8, 2311285), (10, 1849028), (20, 924514), (40, 462257), (503, 36760), (919, 20120), (1006, 18380), (1838, 10060), (2012, 9190), (2515, 7352), (3676, 5030), (4024, 4595)]