81873869

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{293}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 108380160

約数和(自身を除く): 26506291

約数列:

[1, 7, 11, 19, 77, 133, 191, 209, 293, 1337, 1463, 2051, 2101, 3223, 3629, 5567, 14707, 22561, 25403, 38969, 39919, 55963, 61237, 279433, 391741, 428659, 615593, 1063297, 4309151, 7443079, 11696267, 81873869]

約数ペア:

[(1, 81873869), (7, 11696267), (11, 7443079), (19, 4309151), (77, 1063297), (133, 615593), (191, 428659), (209, 391741), (293, 279433), (1337, 61237), (1463, 55963), (2051, 39919), (2101, 38969), (3223, 25403), (3629, 22561), (5567, 14707)]