212921985

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{3823}}^1$

素因数の和:3957

約数の個数: 32

約数和(自身を含む): 352419840

約数和(自身を除く): 139497855

約数列:

[1, 3, 5, 15, 47, 79, 141, 235, 237, 395, 705, 1185, 3713, 3823, 11139, 11469, 18565, 19115, 55695, 57345, 179681, 302017, 539043, 898405, 906051, 1510085, 2695215, 4530255, 14194799, 42584397, 70973995, 212921985]

約数ペア:

[(1, 212921985), (3, 70973995), (5, 42584397), (15, 14194799), (47, 4530255), (79, 2695215), (141, 1510085), (235, 906051), (237, 898405), (395, 539043), (705, 302017), (1185, 179681), (3713, 57345), (3823, 55695), (11139, 19115), (11469, 18565)]