18965500

素因数分解:

$2^2\times 5^3\times {\mathrm{83}}^1\times {\mathrm{457}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 42011424

約数和(自身を除く): 23045924

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 83, 100, 125, 166, 250, 332, 415, 457, 500, 830, 914, 1660, 1828, 2075, 2285, 4150, 4570, 8300, 9140, 10375, 11425, 20750, 22850, 37931, 41500, 45700, 57125, 75862, 114250, 151724, 189655, 228500, 379310, 758620, 948275, 1896550, 3793100, 4741375, 9482750, 18965500]

約数ペア:

[(1, 18965500), (2, 9482750), (4, 4741375), (5, 3793100), (10, 1896550), (20, 948275), (25, 758620), (50, 379310), (83, 228500), (100, 189655), (125, 151724), (166, 114250), (250, 75862), (332, 57125), (415, 45700), (457, 41500), (500, 37931), (830, 22850), (914, 20750), (1660, 11425), (1828, 10375), (2075, 9140), (2285, 8300), (4150, 4570)]