20335518

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{643}}^1$

素因数の和:909

約数の個数: 48

約数和(自身を含む): 50633856

約数和(自身を除く): 30298338

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 251, 502, 643, 753, 1286, 1506, 1757, 1929, 2259, 3514, 3858, 4501, 4518, 5271, 5787, 9002, 10542, 11574, 13503, 15813, 27006, 31626, 40509, 81018, 161393, 322786, 484179, 968358, 1129751, 1452537, 2259502, 2905074, 3389253, 6778506, 10167759, 20335518]

約数ペア:

[(1, 20335518), (2, 10167759), (3, 6778506), (6, 3389253), (7, 2905074), (9, 2259502), (14, 1452537), (18, 1129751), (21, 968358), (42, 484179), (63, 322786), (126, 161393), (251, 81018), (502, 40509), (643, 31626), (753, 27006), (1286, 15813), (1506, 13503), (1757, 11574), (1929, 10542), (2259, 9002), (3514, 5787), (3858, 5271), (4501, 4518)]