19511865

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 35582976

約数和(自身を除く): 16071111

約数列:

[1, 3, 5, 9, 15, 31, 45, 71, 93, 155, 197, 213, 279, 355, 465, 591, 639, 985, 1065, 1395, 1773, 2201, 2955, 3195, 6107, 6603, 8865, 11005, 13987, 18321, 19809, 30535, 33015, 41961, 54963, 69935, 91605, 99045, 125883, 209805, 274815, 433597, 629415, 1300791, 2167985, 3902373, 6503955, 19511865]

約数ペア:

[(1, 19511865), (3, 6503955), (5, 3902373), (9, 2167985), (15, 1300791), (31, 629415), (45, 433597), (71, 274815), (93, 209805), (155, 125883), (197, 99045), (213, 91605), (279, 69935), (355, 54963), (465, 41961), (591, 33015), (639, 30535), (985, 19809), (1065, 18321), (1395, 13987), (1773, 11005), (2201, 8865), (2955, 6603), (3195, 6107)]