128641338

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{340321}}^1$

素因数の和:340339

約数の個数: 32

約数和(自身を含む): 326709120

約数和(自身を除く): 198067782

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378, 340321, 680642, 1020963, 2041926, 2382247, 3062889, 4764494, 6125778, 7146741, 9188667, 14293482, 18377334, 21440223, 42880446, 64320669, 128641338]

約数ペア:

[(1, 128641338), (2, 64320669), (3, 42880446), (6, 21440223), (7, 18377334), (9, 14293482), (14, 9188667), (18, 7146741), (21, 6125778), (27, 4764494), (42, 3062889), (54, 2382247), (63, 2041926), (126, 1020963), (189, 680642), (378, 340321)]