18887265

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 34791120

約数和(自身を除く): 15903855

約数列:

[1, 3, 5, 9, 15, 29, 41, 45, 87, 123, 145, 205, 261, 353, 369, 435, 615, 1059, 1189, 1305, 1765, 1845, 3177, 3567, 5295, 5945, 10237, 10701, 14473, 15885, 17835, 30711, 43419, 51185, 53505, 72365, 92133, 130257, 153555, 217095, 419717, 460665, 651285, 1259151, 2098585, 3777453, 6295755, 18887265]

約数ペア:

[(1, 18887265), (3, 6295755), (5, 3777453), (9, 2098585), (15, 1259151), (29, 651285), (41, 460665), (45, 419717), (87, 217095), (123, 153555), (145, 130257), (205, 92133), (261, 72365), (353, 53505), (369, 51185), (435, 43419), (615, 30711), (1059, 17835), (1189, 15885), (1305, 14473), (1765, 10701), (1845, 10237), (3177, 5945), (3567, 5295)]