20900451

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 34082048

約数和(自身を除く): 13181597

約数列:

[1, 3, 11, 13, 33, 39, 43, 103, 121, 129, 143, 309, 363, 429, 473, 559, 1133, 1339, 1419, 1573, 1677, 3399, 4017, 4429, 4719, 5203, 6149, 12463, 13287, 14729, 15609, 18447, 37389, 44187, 48719, 57577, 67639, 146157, 162019, 172731, 202917, 486057, 535909, 633347, 1607727, 1900041, 6966817, 20900451]

約数ペア:

[(1, 20900451), (3, 6966817), (11, 1900041), (13, 1607727), (33, 633347), (39, 535909), (43, 486057), (103, 202917), (121, 172731), (129, 162019), (143, 146157), (309, 67639), (363, 57577), (429, 48719), (473, 44187), (559, 37389), (1133, 18447), (1339, 15609), (1419, 14729), (1573, 13287), (1677, 12463), (3399, 6149), (4017, 5203), (4429, 4719)]