21243649

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{439}}^1$

素因数の和:700

約数の個数: 16

約数和(自身を含む): 25231360

約数和(自身を除く): 3987711

約数列:

[1, 7, 31, 217, 223, 439, 1561, 3073, 6913, 13609, 48391, 95263, 97897, 685279, 3034807, 21243649]

約数ペア:

[(1, 21243649), (7, 3034807), (31, 685279), (217, 97897), (223, 95263), (439, 48391), (1561, 13609), (3073, 6913)]