19985256

素因数分解:

$2^3\times 3^2\times {\mathrm{197}}^1\times {\mathrm{1409}}^1$

素因数の和:1618

約数の個数: 48

約数和(自身を含む): 54440100

約数和(自身を除く): 34454844

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 197, 394, 591, 788, 1182, 1409, 1576, 1773, 2364, 2818, 3546, 4227, 4728, 5636, 7092, 8454, 11272, 12681, 14184, 16908, 25362, 33816, 50724, 101448, 277573, 555146, 832719, 1110292, 1665438, 2220584, 2498157, 3330876, 4996314, 6661752, 9992628, 19985256]

約数ペア:

[(1, 19985256), (2, 9992628), (3, 6661752), (4, 4996314), (6, 3330876), (8, 2498157), (9, 2220584), (12, 1665438), (18, 1110292), (24, 832719), (36, 555146), (72, 277573), (197, 101448), (394, 50724), (591, 33816), (788, 25362), (1182, 16908), (1409, 14184), (1576, 12681), (1773, 11272), (2364, 8454), (2818, 7092), (3546, 5636), (4227, 4728)]