21000260017

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{491}}^1\times {\mathrm{1811}}^1$

素因数の和:2445

約数の個数: 32

約数和(自身を含む): 24391549440

約数和(自身を除く): 3391289423

約数列:

[1, 11, 19, 113, 209, 491, 1243, 1811, 2147, 5401, 9329, 19921, 23617, 34409, 55483, 102619, 204643, 378499, 610313, 889201, 1054177, 2251073, 3888217, 9781211, 11595947, 16894819, 42770387, 100479713, 185843009, 1105276843, 1909114547, 21000260017]

約数ペア:

[(1, 21000260017), (11, 1909114547), (19, 1105276843), (113, 185843009), (209, 100479713), (491, 42770387), (1243, 16894819), (1811, 11595947), (2147, 9781211), (5401, 3888217), (9329, 2251073), (19921, 1054177), (23617, 889201), (34409, 610313), (55483, 378499), (102619, 204643)]