20712475

素因数分解:

$5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1667}}^1$

素因数の和:1755

約数の個数: 24

約数和(自身を含む): 29783808

約数和(自身を除く): 9071333

約数列:

[1, 5, 7, 25, 35, 71, 175, 355, 497, 1667, 1775, 2485, 8335, 11669, 12425, 41675, 58345, 118357, 291725, 591785, 828499, 2958925, 4142495, 20712475]

約数ペア:

[(1, 20712475), (5, 4142495), (7, 2958925), (25, 828499), (35, 591785), (71, 291725), (175, 118357), (355, 58345), (497, 41675), (1667, 12425), (1775, 11669), (2485, 8335)]