18728853

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 29635200

約数和(自身を除く): 10906347

約数列:

[1, 3, 11, 13, 33, 39, 143, 149, 293, 429, 447, 879, 1639, 1937, 3223, 3809, 4917, 5811, 9669, 11427, 21307, 41899, 43657, 63921, 125697, 130971, 480227, 567541, 1440681, 1702623, 6242951, 18728853]

約数ペア:

[(1, 18728853), (3, 6242951), (11, 1702623), (13, 1440681), (33, 567541), (39, 480227), (143, 130971), (149, 125697), (293, 63921), (429, 43657), (447, 41899), (879, 21307), (1639, 11427), (1937, 9669), (3223, 5811), (3809, 4917)]