81534425

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 123420672

約数和(自身を除く): 41886247

約数列:

[1, 5, 7, 23, 25, 35, 47, 115, 161, 175, 235, 329, 431, 575, 805, 1081, 1175, 1645, 2155, 3017, 4025, 5405, 7567, 8225, 9913, 10775, 15085, 20257, 27025, 37835, 49565, 69391, 75425, 101285, 141799, 189175, 247825, 346955, 465911, 506425, 708995, 1734775, 2329555, 3261377, 3544975, 11647775, 16306885, 81534425]

約数ペア:

[(1, 81534425), (5, 16306885), (7, 11647775), (23, 3544975), (25, 3261377), (35, 2329555), (47, 1734775), (115, 708995), (161, 506425), (175, 465911), (235, 346955), (329, 247825), (431, 189175), (575, 141799), (805, 101285), (1081, 75425), (1175, 69391), (1645, 49565), (2155, 37835), (3017, 27025), (4025, 20257), (5405, 15085), (7567, 10775), (8225, 9913)]