201212720

素因数分解:

$2^4\times 5^1\times {\mathrm{2515159}}^1$

素因数の和:2515172

約数の個数: 20

約数和(自身を含む): 467819760

約数和(自身を除く): 266607040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2515159, 5030318, 10060636, 12575795, 20121272, 25151590, 40242544, 50303180, 100606360, 201212720]

約数ペア:

[(1, 201212720), (2, 100606360), (4, 50303180), (5, 40242544), (8, 25151590), (10, 20121272), (16, 12575795), (20, 10060636), (40, 5030318), (80, 2515159)]