21000514818

素因数分解:

$2^1\times 3^1\times {\mathrm{409}}^1\times {\mathrm{421}}^1\times {\mathrm{20327}}^1$

素因数の和:21162

約数の個数: 32

約数和(自身を含む): 42205806720

約数和(自身を除く): 21205291902

約数列:

[1, 2, 3, 6, 409, 421, 818, 842, 1227, 1263, 2454, 2526, 20327, 40654, 60981, 121962, 172189, 344378, 516567, 1033134, 8313743, 8557667, 16627486, 17115334, 24941229, 25673001, 49882458, 51346002, 3500085803, 7000171606, 10500257409, 21000514818]

約数ペア:

[(1, 21000514818), (2, 10500257409), (3, 7000171606), (6, 3500085803), (409, 51346002), (421, 49882458), (818, 25673001), (842, 24941229), (1227, 17115334), (1263, 16627486), (2454, 8557667), (2526, 8313743), (20327, 1033134), (40654, 516567), (60981, 344378), (121962, 172189)]