21000314648

素因数分解:

$2^3\times {\mathrm{123143}}^1\times {\mathrm{21317}}^1$

素因数の和:144466

約数の個数: 16

約数和(自身を含む): 39377756880

約数和(自身を除く): 18377442232

約数列:

[1, 2, 4, 8, 21317, 42634, 85268, 123143, 170536, 246286, 492572, 985144, 2625039331, 5250078662, 10500157324, 21000314648]

約数ペア:

[(1, 21000314648), (2, 10500157324), (4, 5250078662), (8, 2625039331), (21317, 985144), (42634, 492572), (85268, 246286), (123143, 170536)]