20948913

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{509}}^1$

素因数の和:801

約数の個数: 24

約数和(自身を含む): 32221800

約数和(自身を除く): 11272887

約数列:

[1, 3, 9, 17, 51, 153, 269, 509, 807, 1527, 2421, 4573, 4581, 8653, 13719, 25959, 41157, 77877, 136921, 410763, 1232289, 2327657, 6982971, 20948913]

約数ペア:

[(1, 20948913), (3, 6982971), (9, 2327657), (17, 1232289), (51, 410763), (153, 136921), (269, 77877), (509, 41157), (807, 25959), (1527, 13719), (2421, 8653), (4573, 4581)]