20499993

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 32400000

約数和(自身を除く): 11900007

約数列:

[1, 3, 9, 19, 27, 57, 89, 171, 267, 449, 513, 801, 1347, 1691, 2403, 4041, 5073, 8531, 12123, 15219, 25593, 39961, 45657, 76779, 119883, 230337, 359649, 759259, 1078947, 2277777, 6833331, 20499993]

約数ペア:

[(1, 20499993), (3, 6833331), (9, 2277777), (19, 1078947), (27, 759259), (57, 359649), (89, 230337), (171, 119883), (267, 76779), (449, 45657), (513, 39961), (801, 25593), (1347, 15219), (1691, 12123), (2403, 8531), (4041, 5073)]