20407750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 42928704

約数和(自身を除く): 22520954

約数列:

[1, 2, 5, 10, 11, 22, 25, 41, 50, 55, 82, 110, 125, 181, 205, 250, 275, 362, 410, 451, 550, 902, 905, 1025, 1375, 1810, 1991, 2050, 2255, 2750, 3982, 4510, 4525, 5125, 7421, 9050, 9955, 10250, 11275, 14842, 19910, 22550, 22625, 37105, 45250, 49775, 56375, 74210, 81631, 99550, 112750, 163262, 185525, 248875, 371050, 408155, 497750, 816310, 927625, 1855250, 2040775, 4081550, 10203875, 20407750]

約数ペア:

[(1, 20407750), (2, 10203875), (5, 4081550), (10, 2040775), (11, 1855250), (22, 927625), (25, 816310), (41, 497750), (50, 408155), (55, 371050), (82, 248875), (110, 185525), (125, 163262), (181, 112750), (205, 99550), (250, 81631), (275, 74210), (362, 56375), (410, 49775), (451, 45250), (550, 37105), (902, 22625), (905, 22550), (1025, 19910), (1375, 14842), (1810, 11275), (1991, 10250), (2050, 9955), (2255, 9050), (2750, 7421), (3982, 5125), (4510, 4525)]