21000927278

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{2137}}^1\times {\mathrm{258613}}^1$

素因数の和:260771

約数の個数: 16

約数和(自身を含む): 33175003920

約数和(自身を除く): 12174076642

約数列:

[1, 2, 19, 38, 2137, 4274, 40603, 81206, 258613, 517226, 4913647, 9827294, 552655981, 1105311962, 10500463639, 21000927278]

約数ペア:

[(1, 21000927278), (2, 10500463639), (19, 1105311962), (38, 552655981), (2137, 9827294), (4274, 4913647), (40603, 517226), (81206, 258613)]