90490281

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{443}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 141170688

約数和(自身を除く): 50680407

約数列:

[1, 3, 7, 21, 71, 137, 213, 411, 443, 497, 959, 1329, 1491, 2877, 3101, 9303, 9727, 29181, 31453, 60691, 68089, 94359, 182073, 204267, 220171, 424837, 660513, 1274511, 4309061, 12927183, 30163427, 90490281]

約数ペア:

[(1, 90490281), (3, 30163427), (7, 12927183), (21, 4309061), (71, 1274511), (137, 660513), (213, 424837), (411, 220171), (443, 204267), (497, 182073), (959, 94359), (1329, 68089), (1491, 60691), (2877, 31453), (3101, 29181), (9303, 9727)]