81900700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5087}}^1$

素因数の和:5131

約数の個数: 72

約数和(自身を含む): 211986432

約数和(自身を除く): 130085732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 50, 70, 92, 100, 115, 140, 161, 175, 230, 322, 350, 460, 575, 644, 700, 805, 1150, 1610, 2300, 3220, 4025, 5087, 8050, 10174, 16100, 20348, 25435, 35609, 50870, 71218, 101740, 117001, 127175, 142436, 178045, 234002, 254350, 356090, 468004, 508700, 585005, 712180, 819007, 890225, 1170010, 1638014, 1780450, 2340020, 2925025, 3276028, 3560900, 4095035, 5850050, 8190070, 11700100, 16380140, 20475175, 40950350, 81900700]

約数ペア:

[(1, 81900700), (2, 40950350), (4, 20475175), (5, 16380140), (7, 11700100), (10, 8190070), (14, 5850050), (20, 4095035), (23, 3560900), (25, 3276028), (28, 2925025), (35, 2340020), (46, 1780450), (50, 1638014), (70, 1170010), (92, 890225), (100, 819007), (115, 712180), (140, 585005), (161, 508700), (175, 468004), (230, 356090), (322, 254350), (350, 234002), (460, 178045), (575, 142436), (644, 127175), (700, 117001), (805, 101740), (1150, 71218), (1610, 50870), (2300, 35609), (3220, 25435), (4025, 20348), (5087, 16100), (8050, 10174)]