20640315

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{2063}}^1$

素因数の和:2123

約数の個数: 32

約数和(自身を含む): 35665920

約数和(自身を除く): 15025605

約数列:

[1, 3, 5, 15, 23, 29, 69, 87, 115, 145, 345, 435, 667, 2001, 2063, 3335, 6189, 10005, 10315, 30945, 47449, 59827, 142347, 179481, 237245, 299135, 711735, 897405, 1376021, 4128063, 6880105, 20640315]

約数ペア:

[(1, 20640315), (3, 6880105), (5, 4128063), (15, 1376021), (23, 897405), (29, 711735), (69, 299135), (87, 237245), (115, 179481), (145, 142347), (345, 59827), (435, 47449), (667, 30945), (2001, 10315), (2063, 10005), (3335, 6189)]