28640289

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{1601}}^1$

素因数の和:1760

約数の個数: 16

約数和(自身を含む): 39216960

約数和(自身を除く): 10576671

約数列:

[1, 3, 67, 89, 201, 267, 1601, 4803, 5963, 17889, 107267, 142489, 321801, 427467, 9546763, 28640289]

約数ペア:

[(1, 28640289), (3, 9546763), (67, 427467), (89, 321801), (201, 142489), (267, 107267), (1601, 17889), (4803, 5963)]