20546379

素因数分解:

$3^5\times 7^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 36062208

約数和(自身を除く): 15515829

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 243, 257, 329, 423, 567, 771, 987, 1269, 1701, 1799, 2313, 2961, 3807, 5397, 6939, 8883, 11421, 12079, 16191, 20817, 26649, 36237, 48573, 62451, 79947, 84553, 108711, 145719, 253659, 326133, 437157, 760977, 978399, 2282931, 2935197, 6848793, 20546379]

約数ペア:

[(1, 20546379), (3, 6848793), (7, 2935197), (9, 2282931), (21, 978399), (27, 760977), (47, 437157), (63, 326133), (81, 253659), (141, 145719), (189, 108711), (243, 84553), (257, 79947), (329, 62451), (423, 48573), (567, 36237), (771, 26649), (987, 20817), (1269, 16191), (1701, 12079), (1799, 11421), (2313, 8883), (2961, 6939), (3807, 5397)]