21001078

素因数分解:

$2^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{20549}}^1$

素因数の和:20631

約数の個数: 16

約数和(自身を含む): 36496800

約数和(自身を除く): 15495722

約数列:

[1, 2, 7, 14, 73, 146, 511, 1022, 20549, 41098, 143843, 287686, 1500077, 3000154, 10500539, 21001078]

約数ペア:

[(1, 21001078), (2, 10500539), (7, 3000154), (14, 1500077), (73, 287686), (146, 143843), (511, 41098), (1022, 20549)]