18457621

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 23950080

約数和(自身を除く): 5492459

約数列:

[1, 7, 13, 43, 53, 89, 91, 301, 371, 559, 623, 689, 1157, 2279, 3827, 3913, 4717, 4823, 8099, 15953, 26789, 29627, 33019, 49751, 61321, 202831, 207389, 348257, 429247, 1419817, 2636803, 18457621]

約数ペア:

[(1, 18457621), (7, 2636803), (13, 1419817), (43, 429247), (53, 348257), (89, 207389), (91, 202831), (301, 61321), (371, 49751), (559, 33019), (623, 29627), (689, 26789), (1157, 15953), (2279, 8099), (3827, 4823), (3913, 4717)]