20643405

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{641}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 35130240

約数和(自身を除く): 14486835

約数列:

[1, 3, 5, 15, 19, 57, 95, 113, 285, 339, 565, 641, 1695, 1923, 2147, 3205, 6441, 9615, 10735, 12179, 32205, 36537, 60895, 72433, 182685, 217299, 362165, 1086495, 1376227, 4128681, 6881135, 20643405]

約数ペア:

[(1, 20643405), (3, 6881135), (5, 4128681), (15, 1376227), (19, 1086495), (57, 362165), (95, 217299), (113, 182685), (285, 72433), (339, 60895), (565, 36537), (641, 32205), (1695, 12179), (1923, 10735), (2147, 9615), (3205, 6441)]