20992520

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18097}}^1$

素因数の和:18137

約数の個数: 32

約数和(自身を含む): 48864600

約数和(自身を除く): 27872080

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18097, 36194, 72388, 90485, 144776, 180970, 361940, 524813, 723880, 1049626, 2099252, 2624065, 4198504, 5248130, 10496260, 20992520]

約数ペア:

[(1, 20992520), (2, 10496260), (4, 5248130), (5, 4198504), (8, 2624065), (10, 2099252), (20, 1049626), (29, 723880), (40, 524813), (58, 361940), (116, 180970), (145, 144776), (232, 90485), (290, 72388), (580, 36194), (1160, 18097)]