220187751

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{551849}}^1$

素因数の和:551878

約数の個数: 16

約数和(自身を含む): 353184000

約数和(自身を除く): 132996249

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 551849, 1655547, 3862943, 10485131, 11588829, 31455393, 73395917, 220187751]

約数ペア:

[(1, 220187751), (3, 73395917), (7, 31455393), (19, 11588829), (21, 10485131), (57, 3862943), (133, 1655547), (399, 551849)]