28206621

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 47024640

約数和(自身を除く): 18818019

約数列:

[1, 3, 9, 17, 19, 31, 51, 57, 93, 153, 171, 279, 313, 323, 527, 589, 939, 969, 1581, 1767, 2817, 2907, 4743, 5301, 5321, 5947, 9703, 10013, 15963, 17841, 29109, 30039, 47889, 53523, 87327, 90117, 101099, 164951, 184357, 303297, 494853, 553071, 909891, 1484559, 1659213, 3134069, 9402207, 28206621]

約数ペア:

[(1, 28206621), (3, 9402207), (9, 3134069), (17, 1659213), (19, 1484559), (31, 909891), (51, 553071), (57, 494853), (93, 303297), (153, 184357), (171, 164951), (279, 101099), (313, 90117), (323, 87327), (527, 53523), (589, 47889), (939, 30039), (969, 29109), (1581, 17841), (1767, 15963), (2817, 10013), (2907, 9703), (4743, 5947), (5301, 5321)]