161000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{23}}^1$

素因数の和:51

約数の個数: 64

約数和(自身を含む): 449280

約数和(自身を除く): 288280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 25, 28, 35, 40, 46, 50, 56, 70, 92, 100, 115, 125, 140, 161, 175, 184, 200, 230, 250, 280, 322, 350, 460, 500, 575, 644, 700, 805, 875, 920, 1000, 1150, 1288, 1400, 1610, 1750, 2300, 2875, 3220, 3500, 4025, 4600, 5750, 6440, 7000, 8050, 11500, 16100, 20125, 23000, 32200, 40250, 80500, 161000]

約数ペア:

[(1, 161000), (2, 80500), (4, 40250), (5, 32200), (7, 23000), (8, 20125), (10, 16100), (14, 11500), (20, 8050), (23, 7000), (25, 6440), (28, 5750), (35, 4600), (40, 4025), (46, 3500), (50, 3220), (56, 2875), (70, 2300), (92, 1750), (100, 1610), (115, 1400), (125, 1288), (140, 1150), (161, 1000), (175, 920), (184, 875), (200, 805), (230, 700), (250, 644), (280, 575), (322, 500), (350, 460)]