20815708720

素因数分解:

$2^4\times 5^1\times {\mathrm{260196359}}^1$

素因数の和:260196372

約数の個数: 20

約数和(自身を含む): 48396522960

約数和(自身を除く): 27580814240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260196359, 520392718, 1040785436, 1300981795, 2081570872, 2601963590, 4163141744, 5203927180, 10407854360, 20815708720]

約数ペア:

[(1, 20815708720), (2, 10407854360), (4, 5203927180), (5, 4163141744), (8, 2601963590), (10, 2081570872), (16, 1300981795), (20, 1040785436), (40, 520392718), (80, 260196359)]