216222741

素因数分解:

$3^2\times 7^3\times {\mathrm{89}}^1\times {\mathrm{787}}^1$

素因数の和:903

約数の個数: 48

約数和(自身を含む): 368784000

約数和(自身を除く): 152561259

約数列:

[1, 3, 7, 9, 21, 49, 63, 89, 147, 267, 343, 441, 623, 787, 801, 1029, 1869, 2361, 3087, 4361, 5509, 5607, 7083, 13083, 16527, 30527, 38563, 39249, 49581, 70043, 91581, 115689, 210129, 269941, 274743, 347067, 490301, 630387, 809823, 1470903, 2429469, 3432107, 4412709, 10296321, 24024749, 30888963, 72074247, 216222741]

約数ペア:

[(1, 216222741), (3, 72074247), (7, 30888963), (9, 24024749), (21, 10296321), (49, 4412709), (63, 3432107), (89, 2429469), (147, 1470903), (267, 809823), (343, 630387), (441, 490301), (623, 347067), (787, 274743), (801, 269941), (1029, 210129), (1869, 115689), (2361, 91581), (3087, 70043), (4361, 49581), (5509, 39249), (5607, 38563), (7083, 30527), (13083, 16527)]