87321760

素因数分解:

$2^5\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1361}}^1$

素因数の和:1777

約数の個数: 48

約数和(自身を含む): 206964072

約数和(自身を除く): 119642312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 401, 802, 1361, 1604, 2005, 2722, 3208, 4010, 5444, 6416, 6805, 8020, 10888, 12832, 13610, 16040, 21776, 27220, 32080, 43552, 54440, 64160, 108880, 217760, 545761, 1091522, 2183044, 2728805, 4366088, 5457610, 8732176, 10915220, 17464352, 21830440, 43660880, 87321760]

約数ペア:

[(1, 87321760), (2, 43660880), (4, 21830440), (5, 17464352), (8, 10915220), (10, 8732176), (16, 5457610), (20, 4366088), (32, 2728805), (40, 2183044), (80, 1091522), (160, 545761), (401, 217760), (802, 108880), (1361, 64160), (1604, 54440), (2005, 43552), (2722, 32080), (3208, 27220), (4010, 21776), (5444, 16040), (6416, 13610), (6805, 12832), (8020, 10888)]