20289945

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1553}}^1$

素因数の和:1641

約数の個数: 32

約数和(自身を含む): 35505792

約数和(自身を除く): 15215847

約数列:

[1, 3, 5, 13, 15, 39, 65, 67, 195, 201, 335, 871, 1005, 1553, 2613, 4355, 4659, 7765, 13065, 20189, 23295, 60567, 100945, 104051, 302835, 312153, 520255, 1352663, 1560765, 4057989, 6763315, 20289945]

約数ペア:

[(1, 20289945), (3, 6763315), (5, 4057989), (13, 1560765), (15, 1352663), (39, 520255), (65, 312153), (67, 302835), (195, 104051), (201, 100945), (335, 60567), (871, 23295), (1005, 20189), (1553, 13065), (2613, 7765), (4355, 4659)]