20931777

素因数分解:

$3^7\times {\mathrm{17}}^1\times {\mathrm{563}}^1$

素因数の和:601

約数の個数: 32

約数和(自身を含む): 33298560

約数和(自身を除く): 12366783

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 563, 729, 1377, 1689, 2187, 4131, 5067, 9571, 12393, 15201, 28713, 37179, 45603, 86139, 136809, 258417, 410427, 775251, 1231281, 2325753, 6977259, 20931777]

約数ペア:

[(1, 20931777), (3, 6977259), (9, 2325753), (17, 1231281), (27, 775251), (51, 410427), (81, 258417), (153, 136809), (243, 86139), (459, 45603), (563, 37179), (729, 28713), (1377, 15201), (1689, 12393), (2187, 9571), (4131, 5067)]