28709960

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{5479}}^1$

素因数の和:5621

約数の個数: 32

約数和(自身を含む): 65102400

約数和(自身を除く): 36392440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 5479, 10958, 21916, 27395, 43832, 54790, 109580, 219160, 717749, 1435498, 2870996, 3588745, 5741992, 7177490, 14354980, 28709960]

約数ペア:

[(1, 28709960), (2, 14354980), (4, 7177490), (5, 5741992), (8, 3588745), (10, 2870996), (20, 1435498), (40, 717749), (131, 219160), (262, 109580), (524, 54790), (655, 43832), (1048, 27395), (1310, 21916), (2620, 10958), (5240, 5479)]