421490385

素因数分解:

$3^4\times 5^1\times {\mathrm{1040717}}^1$

素因数の和:1040734

約数の個数: 20

約数和(自身を含む): 755561268

約数和(自身を除く): 334070883

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 1040717, 3122151, 5203585, 9366453, 15610755, 28099359, 46832265, 84298077, 140496795, 421490385]

約数ペア:

[(1, 421490385), (3, 140496795), (5, 84298077), (9, 46832265), (15, 28099359), (27, 15610755), (45, 9366453), (81, 5203585), (135, 3122151), (405, 1040717)]