20121894640

素因数分解:

$2^4\times 5^1\times {\mathrm{251523683}}^1$

素因数の和:251523696

約数の個数: 20

約数和(自身を含む): 46783405224

約数和(自身を除く): 26661510584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251523683, 503047366, 1006094732, 1257618415, 2012189464, 2515236830, 4024378928, 5030473660, 10060947320, 20121894640]

約数ペア:

[(1, 20121894640), (2, 10060947320), (4, 5030473660), (5, 4024378928), (8, 2515236830), (10, 2012189464), (16, 1257618415), (20, 1006094732), (40, 503047366), (80, 251523683)]