28362719

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{521}}^1$

素因数の和:647

約数の個数: 24

約数和(自身を含む): 36418896

約数和(自身を除く): 8056177

約数列:

[1, 7, 11, 49, 77, 101, 521, 539, 707, 1111, 3647, 4949, 5731, 7777, 25529, 40117, 52621, 54439, 280819, 368347, 578831, 2578429, 4051817, 28362719]

約数ペア:

[(1, 28362719), (7, 4051817), (11, 2578429), (49, 578831), (77, 368347), (101, 280819), (521, 54439), (539, 52621), (707, 40117), (1111, 25529), (3647, 7777), (4949, 5731)]