20088520

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8233}}^1$

素因数の和:8305

約数の個数: 32

約数和(自身を含む): 45945720

約数和(自身を除く): 25857200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8233, 16466, 32932, 41165, 65864, 82330, 164660, 329320, 502213, 1004426, 2008852, 2511065, 4017704, 5022130, 10044260, 20088520]

約数ペア:

[(1, 20088520), (2, 10044260), (4, 5022130), (5, 4017704), (8, 2511065), (10, 2008852), (20, 1004426), (40, 502213), (61, 329320), (122, 164660), (244, 82330), (305, 65864), (488, 41165), (610, 32932), (1220, 16466), (2440, 8233)]