28471425

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 49496832

約数和(自身を除く): 21025407

約数列:

[1, 3, 5, 15, 25, 41, 47, 75, 123, 141, 197, 205, 235, 591, 615, 705, 985, 1025, 1175, 1927, 2955, 3075, 3525, 4925, 5781, 8077, 9259, 9635, 14775, 24231, 27777, 28905, 40385, 46295, 48175, 121155, 138885, 144525, 201925, 231475, 379619, 605775, 694425, 1138857, 1898095, 5694285, 9490475, 28471425]

約数ペア:

[(1, 28471425), (3, 9490475), (5, 5694285), (15, 1898095), (25, 1138857), (41, 694425), (47, 605775), (75, 379619), (123, 231475), (141, 201925), (197, 144525), (205, 138885), (235, 121155), (591, 48175), (615, 46295), (705, 40385), (985, 28905), (1025, 27777), (1175, 24231), (1927, 14775), (2955, 9635), (3075, 9259), (3525, 8077), (4925, 5781)]