20977040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{797}}^1$

素因数の和:864

約数の個数: 80

約数和(自身を含む): 56996352

約数和(自身を除く): 36019312

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 56, 70, 80, 94, 112, 140, 188, 235, 280, 329, 376, 470, 560, 658, 752, 797, 940, 1316, 1594, 1645, 1880, 2632, 3188, 3290, 3760, 3985, 5264, 5579, 6376, 6580, 7970, 11158, 12752, 13160, 15940, 22316, 26320, 27895, 31880, 37459, 44632, 55790, 63760, 74918, 89264, 111580, 149836, 187295, 223160, 262213, 299672, 374590, 446320, 524426, 599344, 749180, 1048852, 1311065, 1498360, 2097704, 2622130, 2996720, 4195408, 5244260, 10488520, 20977040]

約数ペア:

[(1, 20977040), (2, 10488520), (4, 5244260), (5, 4195408), (7, 2996720), (8, 2622130), (10, 2097704), (14, 1498360), (16, 1311065), (20, 1048852), (28, 749180), (35, 599344), (40, 524426), (47, 446320), (56, 374590), (70, 299672), (80, 262213), (94, 223160), (112, 187295), (140, 149836), (188, 111580), (235, 89264), (280, 74918), (329, 63760), (376, 55790), (470, 44632), (560, 37459), (658, 31880), (752, 27895), (797, 26320), (940, 22316), (1316, 15940), (1594, 13160), (1645, 12752), (1880, 11158), (2632, 7970), (3188, 6580), (3290, 6376), (3760, 5579), (3985, 5264)]