21122642

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{7829}}^1$

素因数の和:7921

約数の個数: 16

約数和(自身を含む): 33825600

約数和(自身を除く): 12702958

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 7829, 15658, 148751, 297502, 555859, 1111718, 10561321, 21122642]

約数ペア:

[(1, 21122642), (2, 10561321), (19, 1111718), (38, 555859), (71, 297502), (142, 148751), (1349, 15658), (2698, 7829)]