21895300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1009}}^1$

素因数の和:1061

約数の個数: 72

約数和(自身を含む): 56107520

約数和(自身を除く): 34212220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 140, 155, 175, 217, 310, 350, 434, 620, 700, 775, 868, 1009, 1085, 1550, 2018, 2170, 3100, 4036, 4340, 5045, 5425, 7063, 10090, 10850, 14126, 20180, 21700, 25225, 28252, 31279, 35315, 50450, 62558, 70630, 100900, 125116, 141260, 156395, 176575, 218953, 312790, 353150, 437906, 625580, 706300, 781975, 875812, 1094765, 1563950, 2189530, 3127900, 4379060, 5473825, 10947650, 21895300]

約数ペア:

[(1, 21895300), (2, 10947650), (4, 5473825), (5, 4379060), (7, 3127900), (10, 2189530), (14, 1563950), (20, 1094765), (25, 875812), (28, 781975), (31, 706300), (35, 625580), (50, 437906), (62, 353150), (70, 312790), (100, 218953), (124, 176575), (140, 156395), (155, 141260), (175, 125116), (217, 100900), (310, 70630), (350, 62558), (434, 50450), (620, 35315), (700, 31279), (775, 28252), (868, 25225), (1009, 21700), (1085, 20180), (1550, 14126), (2018, 10850), (2170, 10090), (3100, 7063), (4036, 5425), (4340, 5045)]