87720875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{487}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 120586752

約数和(自身を除く): 32865877

約数列:

[1, 5, 11, 25, 55, 125, 131, 275, 487, 655, 1375, 1441, 2435, 3275, 5357, 7205, 12175, 16375, 26785, 36025, 60875, 63797, 133925, 180125, 318985, 669625, 701767, 1594925, 3508835, 7974625, 17544175, 87720875]

約数ペア:

[(1, 87720875), (5, 17544175), (11, 7974625), (25, 3508835), (55, 1594925), (125, 701767), (131, 669625), (275, 318985), (487, 180125), (655, 133925), (1375, 63797), (1441, 60875), (2435, 36025), (3275, 26785), (5357, 16375), (7205, 12175)]