21701225

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9539}}^1$

素因数の和:9569

約数の個数: 24

約数和(自身を含む): 33122880

約数和(自身を除く): 11421655

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 9539, 47695, 66773, 124007, 238475, 333865, 620035, 868049, 1669325, 3100175, 4340245, 21701225]

約数ペア:

[(1, 21701225), (5, 4340245), (7, 3100175), (13, 1669325), (25, 868049), (35, 620035), (65, 333865), (91, 238475), (175, 124007), (325, 66773), (455, 47695), (2275, 9539)]