21797061

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 35750400

約数和(自身を除く): 13953339

約数列:

[1, 3, 11, 13, 31, 33, 39, 93, 121, 143, 149, 341, 363, 403, 429, 447, 1023, 1209, 1573, 1639, 1937, 3751, 4433, 4619, 4719, 4917, 5811, 11253, 13299, 13857, 18029, 21307, 48763, 50809, 54087, 60047, 63921, 146289, 152427, 180141, 234377, 558899, 660517, 703131, 1676697, 1981551, 7265687, 21797061]

約数ペア:

[(1, 21797061), (3, 7265687), (11, 1981551), (13, 1676697), (31, 703131), (33, 660517), (39, 558899), (93, 234377), (121, 180141), (143, 152427), (149, 146289), (341, 63921), (363, 60047), (403, 54087), (429, 50809), (447, 48763), (1023, 21307), (1209, 18029), (1573, 13857), (1639, 13299), (1937, 11253), (3751, 5811), (4433, 4917), (4619, 4719)]