28215425

素因数分解:

$5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{743}}^1$

素因数の和:798

約数の個数: 36

約数和(自身を含む): 42068736

約数和(自身を除く): 13853311

約数列:

[1, 5, 7, 25, 31, 35, 49, 155, 175, 217, 245, 743, 775, 1085, 1225, 1519, 3715, 5201, 5425, 7595, 18575, 23033, 26005, 36407, 37975, 115165, 130025, 161231, 182035, 575825, 806155, 910175, 1128617, 4030775, 5643085, 28215425]

約数ペア:

[(1, 28215425), (5, 5643085), (7, 4030775), (25, 1128617), (31, 910175), (35, 806155), (49, 575825), (155, 182035), (175, 161231), (217, 130025), (245, 115165), (743, 37975), (775, 36407), (1085, 26005), (1225, 23033), (1519, 18575), (3715, 7595), (5201, 5425)]