251180920

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{911}}^1$

素因数の和:1096

約数の個数: 64

約数和(自身を含む): 580141440

約数和(自身を除く): 328960520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 113, 122, 226, 244, 305, 452, 488, 565, 610, 904, 911, 1130, 1220, 1822, 2260, 2440, 3644, 4520, 4555, 6893, 7288, 9110, 13786, 18220, 27572, 34465, 36440, 55144, 55571, 68930, 102943, 111142, 137860, 205886, 222284, 275720, 277855, 411772, 444568, 514715, 555710, 823544, 1029430, 1111420, 2058860, 2222840, 4117720, 6279523, 12559046, 25118092, 31397615, 50236184, 62795230, 125590460, 251180920]

約数ペア:

[(1, 251180920), (2, 125590460), (4, 62795230), (5, 50236184), (8, 31397615), (10, 25118092), (20, 12559046), (40, 6279523), (61, 4117720), (113, 2222840), (122, 2058860), (226, 1111420), (244, 1029430), (305, 823544), (452, 555710), (488, 514715), (565, 444568), (610, 411772), (904, 277855), (911, 275720), (1130, 222284), (1220, 205886), (1822, 137860), (2260, 111142), (2440, 102943), (3644, 68930), (4520, 55571), (4555, 55144), (6893, 36440), (7288, 34465), (9110, 27572), (13786, 18220)]