19853925

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2909}}^1$

素因数の和:2942

約数の個数: 48

約数和(自身を含む): 40414080

約数和(自身を除く): 20560155

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 65, 75, 91, 105, 175, 195, 273, 325, 455, 525, 975, 1365, 2275, 2909, 6825, 8727, 14545, 20363, 37817, 43635, 61089, 72725, 101815, 113451, 189085, 218175, 264719, 305445, 509075, 567255, 794157, 945425, 1323595, 1527225, 2836275, 3970785, 6617975, 19853925]

約数ペア:

[(1, 19853925), (3, 6617975), (5, 3970785), (7, 2836275), (13, 1527225), (15, 1323595), (21, 945425), (25, 794157), (35, 567255), (39, 509075), (65, 305445), (75, 264719), (91, 218175), (105, 189085), (175, 113451), (195, 101815), (273, 72725), (325, 61089), (455, 43635), (525, 37817), (975, 20363), (1365, 14545), (2275, 8727), (2909, 6825)]