28249910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{217307}}^1$

素因数の和:217327

約数の個数: 16

約数和(自身を含む): 54761616

約数和(自身を除く): 26511706

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 217307, 434614, 1086535, 2173070, 2824991, 5649982, 14124955, 28249910]

約数ペア:

[(1, 28249910), (2, 14124955), (5, 5649982), (10, 2824991), (13, 2173070), (26, 1086535), (65, 434614), (130, 217307)]