19720778877

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{211}}^1\times {\mathrm{170243}}^1$

素因数の和:170521

約数の個数: 24

約数和(自身を含む): 29089932768

約数和(自身を除く): 9369153891

約数列:

[1, 3, 9, 61, 183, 211, 549, 633, 1899, 12871, 38613, 115839, 170243, 510729, 1532187, 10384823, 31154469, 35921273, 93463407, 107763819, 323291457, 2191197653, 6573592959, 19720778877]

約数ペア:

[(1, 19720778877), (3, 6573592959), (9, 2191197653), (61, 323291457), (183, 107763819), (211, 93463407), (549, 35921273), (633, 31154469), (1899, 10384823), (12871, 1532187), (38613, 510729), (115839, 170243)]