21000304850

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{504209}}^1$

素因数の和:504252

約数の個数: 72

約数和(自身を含む): 48110709780

約数和(自身を除く): 27110404930

約数列:

[1, 2, 5, 7, 10, 14, 17, 25, 34, 35, 49, 50, 70, 85, 98, 119, 170, 175, 238, 245, 350, 425, 490, 595, 833, 850, 1190, 1225, 1666, 2450, 2975, 4165, 5950, 8330, 20825, 41650, 504209, 1008418, 2521045, 3529463, 5042090, 7058926, 8571553, 12605225, 17143106, 17647315, 24706241, 25210450, 35294630, 42857765, 49412482, 60000871, 85715530, 88236575, 120001742, 123531205, 176473150, 214288825, 247062410, 300004355, 420006097, 428577650, 600008710, 617656025, 840012194, 1235312050, 1500021775, 2100030485, 3000043550, 4200060970, 10500152425, 21000304850]

約数ペア:

[(1, 21000304850), (2, 10500152425), (5, 4200060970), (7, 3000043550), (10, 2100030485), (14, 1500021775), (17, 1235312050), (25, 840012194), (34, 617656025), (35, 600008710), (49, 428577650), (50, 420006097), (70, 300004355), (85, 247062410), (98, 214288825), (119, 176473150), (170, 123531205), (175, 120001742), (238, 88236575), (245, 85715530), (350, 60000871), (425, 49412482), (490, 42857765), (595, 35294630), (833, 25210450), (850, 24706241), (1190, 17647315), (1225, 17143106), (1666, 12605225), (2450, 8571553), (2975, 7058926), (4165, 5042090), (5950, 3529463), (8330, 2521045), (20825, 1008418), (41650, 504209)]