28875275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 43309728

約数和(自身を除く): 14434453

約数列:

[1, 5, 11, 13, 25, 41, 55, 65, 143, 197, 205, 275, 325, 451, 533, 715, 985, 1025, 2167, 2255, 2561, 2665, 3575, 4925, 5863, 8077, 10835, 11275, 12805, 13325, 28171, 29315, 40385, 54175, 64025, 88847, 105001, 140855, 146575, 201925, 444235, 525005, 704275, 1155011, 2221175, 2625025, 5775055, 28875275]

約数ペア:

[(1, 28875275), (5, 5775055), (11, 2625025), (13, 2221175), (25, 1155011), (41, 704275), (55, 525005), (65, 444235), (143, 201925), (197, 146575), (205, 140855), (275, 105001), (325, 88847), (451, 64025), (533, 54175), (715, 40385), (985, 29315), (1025, 28171), (2167, 13325), (2255, 12805), (2561, 11275), (2665, 10835), (3575, 8077), (4925, 5863)]