179985100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2203}}^1$

素因数の和:2279

約数の個数: 72

約数和(自身を含む): 420875840

約数和(自身を除く): 240890740

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 43, 50, 76, 86, 95, 100, 172, 190, 215, 380, 430, 475, 817, 860, 950, 1075, 1634, 1900, 2150, 2203, 3268, 4085, 4300, 4406, 8170, 8812, 11015, 16340, 20425, 22030, 40850, 41857, 44060, 55075, 81700, 83714, 94729, 110150, 167428, 189458, 209285, 220300, 378916, 418570, 473645, 837140, 947290, 1046425, 1799851, 1894580, 2092850, 2368225, 3599702, 4185700, 4736450, 7199404, 8999255, 9472900, 17998510, 35997020, 44996275, 89992550, 179985100]

約数ペア:

[(1, 179985100), (2, 89992550), (4, 44996275), (5, 35997020), (10, 17998510), (19, 9472900), (20, 8999255), (25, 7199404), (38, 4736450), (43, 4185700), (50, 3599702), (76, 2368225), (86, 2092850), (95, 1894580), (100, 1799851), (172, 1046425), (190, 947290), (215, 837140), (380, 473645), (430, 418570), (475, 378916), (817, 220300), (860, 209285), (950, 189458), (1075, 167428), (1634, 110150), (1900, 94729), (2150, 83714), (2203, 81700), (3268, 55075), (4085, 44060), (4300, 41857), (4406, 40850), (8170, 22030), (8812, 20425), (11015, 16340)]