21269080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2053}}^1$

素因数の和:2108

約数の個数: 64

約数和(自身を含む): 56197440

約数和(自身を除く): 34928360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 2053, 2072, 2590, 4106, 5180, 8212, 10265, 10360, 14371, 16424, 20530, 28742, 41060, 57484, 71855, 75961, 82120, 114968, 143710, 151922, 287420, 303844, 379805, 531727, 574840, 607688, 759610, 1063454, 1519220, 2126908, 2658635, 3038440, 4253816, 5317270, 10634540, 21269080]

約数ペア:

[(1, 21269080), (2, 10634540), (4, 5317270), (5, 4253816), (7, 3038440), (8, 2658635), (10, 2126908), (14, 1519220), (20, 1063454), (28, 759610), (35, 607688), (37, 574840), (40, 531727), (56, 379805), (70, 303844), (74, 287420), (140, 151922), (148, 143710), (185, 114968), (259, 82120), (280, 75961), (296, 71855), (370, 57484), (518, 41060), (740, 28742), (1036, 20530), (1295, 16424), (1480, 14371), (2053, 10360), (2072, 10265), (2590, 8212), (4106, 5180)]