20898879

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{269}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 10205121

約数列:

[1, 3, 19, 29, 47, 57, 87, 141, 269, 551, 807, 893, 1363, 1653, 2679, 4089, 5111, 7801, 12643, 15333, 23403, 25897, 37929, 77691, 148219, 240217, 366647, 444657, 720651, 1099941, 6966293, 20898879]

約数ペア:

[(1, 20898879), (3, 6966293), (19, 1099941), (29, 720651), (47, 444657), (57, 366647), (87, 240217), (141, 148219), (269, 77691), (551, 37929), (807, 25897), (893, 23403), (1363, 15333), (1653, 12643), (2679, 7801), (4089, 5111)]