21779757

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1901}}^1$

素因数の和:1993

約数の個数: 24

約数和(自身を含む): 33627360

約数和(自身を除く): 11847603

約数列:

[1, 3, 9, 19, 57, 67, 171, 201, 603, 1273, 1901, 3819, 5703, 11457, 17109, 36119, 108357, 127367, 325071, 382101, 1146303, 2419973, 7259919, 21779757]

約数ペア:

[(1, 21779757), (3, 7259919), (9, 2419973), (19, 1146303), (57, 382101), (67, 325071), (171, 127367), (201, 108357), (603, 36119), (1273, 17109), (1901, 11457), (3819, 5703)]