81378500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{23251}}^1$

素因数の和:23277

約数の個数: 48

約数和(自身を含む): 203129472

約数和(自身を除く): 121750972

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 500, 700, 875, 1750, 3500, 23251, 46502, 93004, 116255, 162757, 232510, 325514, 465020, 581275, 651028, 813785, 1162550, 1627570, 2325100, 2906375, 3255140, 4068925, 5812750, 8137850, 11625500, 16275700, 20344625, 40689250, 81378500]

約数ペア:

[(1, 81378500), (2, 40689250), (4, 20344625), (5, 16275700), (7, 11625500), (10, 8137850), (14, 5812750), (20, 4068925), (25, 3255140), (28, 2906375), (35, 2325100), (50, 1627570), (70, 1162550), (100, 813785), (125, 651028), (140, 581275), (175, 465020), (250, 325514), (350, 232510), (500, 162757), (700, 116255), (875, 93004), (1750, 46502), (3500, 23251)]