20369120

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2087}}^1$

素因数の和:2163

約数の個数: 48

約数和(自身を含む): 48934368

約数和(自身を除く): 28565248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2087, 2440, 4174, 4880, 8348, 9760, 10435, 16696, 20870, 33392, 41740, 66784, 83480, 127307, 166960, 254614, 333920, 509228, 636535, 1018456, 1273070, 2036912, 2546140, 4073824, 5092280, 10184560, 20369120]

約数ペア:

[(1, 20369120), (2, 10184560), (4, 5092280), (5, 4073824), (8, 2546140), (10, 2036912), (16, 1273070), (20, 1018456), (32, 636535), (40, 509228), (61, 333920), (80, 254614), (122, 166960), (160, 127307), (244, 83480), (305, 66784), (488, 41740), (610, 33392), (976, 20870), (1220, 16696), (1952, 10435), (2087, 9760), (2440, 8348), (4174, 4880)]