179630020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{439}}^1\times {\mathrm{499}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 388080000

約数和(自身を除く): 208449980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 439, 499, 820, 878, 998, 1756, 1996, 2195, 2495, 4390, 4990, 8780, 9980, 17999, 20459, 35998, 40918, 71996, 81836, 89995, 102295, 179990, 204590, 219061, 359980, 409180, 438122, 876244, 1095305, 2190610, 4381220, 8981501, 17963002, 35926004, 44907505, 89815010, 179630020]

約数ペア:

[(1, 179630020), (2, 89815010), (4, 44907505), (5, 35926004), (10, 17963002), (20, 8981501), (41, 4381220), (82, 2190610), (164, 1095305), (205, 876244), (410, 438122), (439, 409180), (499, 359980), (820, 219061), (878, 204590), (998, 179990), (1756, 102295), (1996, 89995), (2195, 81836), (2495, 71996), (4390, 40918), (4990, 35998), (8780, 20459), (9980, 17999)]